SKU: 26628232455

Ti-MNPara Strap 20mm - Black

Sale price$34.20 Regular price$38.00
Save 10%

Pay in installments of $9.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Ti-MNPara Strap 20mm - BlackThe SPD Edition Ti MNPara Strap in 20mm is a Marine Nationale style elastic watch strap built with 100% titanium hardware and best grade nylon Spandex webbing. Inspired by the field made parachute elastic straps fashioned by French Navy combat divers in the 1960s and 70s, our version eliminates magnetic interference, resists corrosion in salt water and on land, and adjusts in seconds over a wetsuit or a bare wrist. Fits any watch with 20mm lugs with

The SPD Edition Ti-MNPara Strap in 20mm is a Marine Nationale style elastic watch strap built with 100% titanium hardware and best-grade nylon-Spandex webbing. Inspired by the field-made parachute elastic straps fashioned by French Navy combat divers in the 1960s and 70s, our version eliminates magnetic interference, resists corrosion in salt water and on land, and adjusts in seconds over a wetsuit or a bare wrist. Fits any watch with 20mm lugs with removable spring bars, and some with fixed bars (due the extra durable nature of the new elastic webbing being used, the doubled over end might be too thick to pass through some fixed bar cases without tools to aid in installment). One of the most comfortable and adjustable elastic watch straps made today.

The Marine Nationale strap was not designed in a workshop. It was improvised at sea.

In the 1960s, the French Navy was issuing dive watches to its combat swimmers, the Nageurs de Combat of Commando Hubert, without straps. Tudor Submariners, Doxa Sub 300T, Jacques Bianchi JB300, Triton, ZRC. The watch heads arrived. The means of wearing them did not. Faced with the need for a strap that could be sized in the dark, adjusted over a 7mm neoprene wetsuit, and survive repeated salt water immersion, the operators reached for what they had on hand: surplus elastic webbing recovered from French-issue parachute rigging. They cut it, stitched it, fitted it with simple metal rings and a folding hook closure, and went to work. The result, recognizable today by its olive-and-yellow or red-striped weave, became one of the most quietly influential pieces of military horological gear of the 20th century.

That original field-made strap is the direct ancestor of every modern Marine Nationale style strap on the market. The reference Tudor 9401 dated 1977, now held in the Tudor archive, is documented as having been issued with a strap fashioned from parachute belting. Tudor itself acknowledged this heritage publicly in 2021 when it formalized its partnership with the Marine Nationale and launched the Pelagos FXD.

The SPD Ti-MNPara takes the original concept and rebuilds it for the modern wearer who carries a watch alongside other tools. We start with a heavy nylon webbing woven with Spandex, which holds its elastic memory significantly longer than the generic rubber-cored elastics used in lower-grade straps. We then replace every piece of metal hardware with Grade 5 6AL-4V titanium: both keeper rings, the buckle, and the closure. Titanium delivers three properties stainless steel cannot. It is fully non-magnetic, so it will not become magnetized by rare earth magnets used in modern wallets, key fobs, and EDC pouches, and it will not transfer that magnetism to the movement of a mechanical watch. It is fully corrosion-proof, indifferent to salt water, sweat, and chlorinated pools. And it is roughly 40% lighter than stainless at equivalent strength.

The non-magnetic property matters most to the wearer who pairs a watch with a wrist-mounted compass. Stainless hardware, once magnetized through prolonged contact with strong magnets, will deflect a compass needle by several degrees. Titanium will not. The Ti-MNPara is built to be worn with the PDW Expedition Watch Band Compass Kit, a wrist compass, or any field-grade navigation tool without introducing magnetic error into the bezel.

One strap, no spring bars to lose under load, an infinite range of micro-adjustment, and hardware that will outlast the watch it is fitted to. Carryology named the SPD Ti-MNPara a Best New Carry selection in February 2023. It works on a many Tudors. It works on a Panerai. It works on a 1970s Submariner. It works on whatever you put it on, as long as the lugs measure 20mm.

Find a way or make one.

Specifications:

Materials:
  • Titanium
  • Nylon with Spandex
Dimensions:
  • Strap Width: 20mm
  • OAL: 142mm (min) - 253mm (max)
  • Strap Thickness: 2.00mm
Approx. Weight:
  • 0.4oz / 11.34g
Features:
  • Most Adjustable and Comfortable Nylon Type Strap Available
  • Fits Watches with 20mm Lugs
  • Black Strapping
  • Split End Buckle to Fixed Bar Watch Case Fitment
  • Rings and Clasp 100% Non-Magnetic
  • Rings and Clasp 100% Corrosion-Proof
  • Best in Class Durable and Pliable Woven Nylon with Spandex
  • 100% Titanium Hardware
  • Secure and Easy On/Off Clasp
  • Fits XS to XL Wrists
  • Easily Adjusts Over Wetsuits
  • Not recommended for quartz watches with sensor backs.
Marks:
  • Laser Etched SPD Kraken Trident
Recognition:
  • Carryology Best New Carry, February 2023

FAQ

What is a Marine Nationale watch strap?

A Marine Nationale strap, sometimes shortened to MN strap, is an elastic single-pass watch strap originally improvised in the 1960s and 1970s by combat swimmers of the French Navy, the Marine Nationale, using webbing recovered from military parachute rigging. The original strap typically used a folding metal hook and two keeper rings. It allowed the diver to size the strap over a wetsuit, retain the watch against the wrist under load, and adjust in seconds without buckle holes or pins. The PDW Ti-MNPara is a modern interpretation of that original field-made design.

What is the difference between the PDW Ti-MNPara and a standard Marine Nationale strap?

Two material differences and one performance difference. First, the PDW Ti-MNPara uses 100% Grade 5 6AL-4V titanium for every piece of hardware, where most MN straps on the market use stainless steel or plated brass. Second, our webbing is a woven nylon and Spandex blend chosen for elastic memory retention, where many MN straps use rubber-cored elastic that fatigues over time. The performance result is a strap that is fully non-magnetic, fully corrosion-proof, and significantly lighter than a stainless equivalent.

Why does titanium hardware matter on a watch strap?

Three reasons. Titanium is non-magnetic, so the hardware cannot be magnetized by contact with rare earth magnets in modern wallets, phone cases, key fobs, and EDC pouches. A magnetized strap will magnetize a mechanical watch movement and will deflect any wrist-mounted compass, both of which are real failure modes for field users. Titanium is also fully corrosion-proof in salt water, sweat, and chlorinated water, where even 316L stainless will eventually develop crevice corrosion. And titanium is roughly 40% lighter than stainless at equivalent tensile strength.

Will the Ti-MNPara fit my watch?

The Ti-MNPara fits any watch with 20mm lug width and removable spring bars. Common applications include the pre-2020 year Rolex Submariners, SPD X MKII Paradive, Tudor Black Bay 58, Yema Skin Diver, Vulcain Skin Diver and more. If your watch has 20mm this strap will fit. *Please note, that we cannot verify fitment for every fixed bar watch, but the updated Ti-MNPara should fit the majority of fixed bar watches available.

Can I wear the Ti-MNPara with the PDW Expedition Watch Band Compass Kit?

Yes, and this is one of the reasons it was designed the way it was. The PDW wrist compass features a split mounting slider allowing to fit over the elastic strapping in-between the buckles. Wrist-mounted compasses are highly sensitive to magnetic interference from nearby ferrous hardware. A stainless steel strap, once magnetized through extended contact with rare earth magnets, will introduce several degrees of deflection into a compass bezel reading. The titanium hardware of the Ti-MNPara is fully non-magnetic and will not influence the compass needle, making it the correct strap pairing for any navigation-capable watch setup.

Is the Ti-MNPara safe for use with my mechanical watch?

Yes. Because the hardware is titanium and fully non-magnetic, it cannot transfer magnetic charge to the watch movement. Magnetization is one of the most common causes of timekeeping error in mechanical watches and is increasingly common in modern daily carry because of the prevalence of rare earth magnets in wallets, sleeves, and bag closures. The Ti-MNPara isolates the watch from that risk. Note: not recommended for quartz watches with skin-contact sensors on the case back, as the elastic webbing can interfere with sensor contact.

How do I size the strap to my wrist?

The Ti-MNPara is a single-pass elastic strap. You thread the strap through the spring bars of the watch, around the wrist, through the keeper rings, and secure it through the clasp. The elastic webbing allows the strap to stretch slightly over the hand and then contract to wrist size, holding the watch firmly in place. Length is adjustable by feeding more or less webbing through the keeper rings before securing. Total adjustment range is 142mm to 253mm, which fits XS to XL wrists and accommodates wear over a wetsuit.

What is the history of the Marine Nationale strap?

In the late 1950s and through the 1960s and 1970s, the French Navy issued dive watches to its Nageurs de Combat, the combat swimmer unit known today as Commando Hubert, without straps. The watches arrived as bare watch heads. Operators sourced or fabricated their own straps in the field, frequently using elastic webbing salvaged from military parachute rigging. Tudor archive records reference 9401 dated 1977, fitted with a strap made from parachute belting, as a documented example. The improvised design proved so well-suited to underwater and field use that it has been replicated commercially ever since, and was formally acknowledged by Tudor in 2021 with the launch of the Pelagos FXD, designed specifically for through-passing elastic straps.

Is the Ti-MNPara made in the USA?

The Ti-MNPara is designed by Prometheus Design Werx in San Francisco. Hardware is formed from Grade 5 6AL-4V titanium and the webbing is sourced and assembled to PDW specification in Asia.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 26628232455

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 27 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
Sherid94
Whiting, US
★★★★★ 5
Works great, easy assembly and no issues!
Using the weedeater for edging was too hard, so I purchased this. It works great! It was easy to assemble and easy to use. My lines are perfect, but the size, durability, and power of this gem get the job done, and it's lightweight enough that I can easily maneuver it around the yard. I chose a corded one so I don't have to deal with battery life or charging.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 26, 2025
M
Verified Purchase
M Spring
Lake Worth, US
★★★★★ 5
Great Edger for the Price
I’ve had no issues at all with this lawn edger. For the price point and the amount of edging I need to do, it works great. It has plenty of power and gets the job done cleanly. Just make sure you have a long enough extension cord for your yard or projects. Overall, no complaints—solid product and an easy 5 stars from me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 15, 2025
O
Verified Purchase
Over and Under
Massapequa, US
★★★★★ 5
The Black and Decker BESTA510 is a KEEPER plus it's made in the USA 🇺🇲
Style: String Trimmer
Well folks🙂 I have to tell you this has been a nice weed eater that cuts really good and it's LIGHTWEIGHT and it's powerful👍 and at a PRICE that can't be beat...it's way more powerful than some battery and electric weed eaters that I have.. like a Ryobi... And supposedly a commercial grade Ryobi $200 😤.. Anyway 🙂 This electric weed eater is very good and I'll take that PEPSI challenge any day 😀 when comparing it to some other weed eaters PLUS it doesn't USE LINE like other electric weed eaters that I've used.. at least that's been my experience.. This is a KEEPER weed eater from Black & Decker👍....it handles tall grass and even some hedge... though it probably shouldn't be used for hedge but it's TOUGH 😀 and better than any battery weed eater I used especially with the power and cutting... The power alone and convenience of NOT rushing through the job with the battery pack and charging ect imo is worth the cord drag 🙂... and much better than a battery weed eater or other electric weed eaters.. This just cuts better 👍... With MORE power consistently and constantly through the whole job... So in conclusion 🙂 the Black & Decker BESTA510 weed eater in my opinion is a KEEPER and this model has been around for a while which speaks for itself not to mention Black & Decker has been around for years.... This weed eater OVERALL (pound for pound ) is a solid performer with many mostly liking this weed eater and Black & Decker products overall.. Thanks for reading🙂.. I hope my review helps... and Did I mention It's made in the USA...🇺🇲..🙂...
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 6, 2025
L
Verified Purchase
Lucas B Hager
Omaha, US
★★★★★ 5
No problems all the way to the end of the spool
Style: String Trimmer
I had an old Greenworks string trimmer that I found in the basement after I moved into my new home. Maybe it was just old, but the auto-feed didn't work well, the line was always running out, and I spent more time rewinding the spool than cutting down weeds. I had almost lost my faith in string trimmers entirely. You can spend $300 on one, but how much better are they? I didn't know. This Black & Decker was only $50, and although it's corded, my roommate convinced me it was worth not having to do the dance of recharging batteries, plus having full 110v power. Some (easy) assembly required out of the box, and this thing was basically plug & play. I did read through the owner's manual first, which gave amateur me some confidence through a few helpful tips. I use it not only for cutting down weeds, but also for cleaning out weeds from the cracks in my sidewalk, and the edger wheel is very helpful for that. More importantly, the line had no problems all the way to the end of the spool. Faith restored, there are good string trimmers in the world. That being said, be aware that the line it comes with isn't very long. My lawn is medium-size, and it ran out about halfway through. The Black & Decker replacement spools are $10 / 30 ft (much longer), but it goes through line, so this could really add up. Replacing the spool was easy, and I was able to finish my lawn with plenty line to spare. A quick search on Amazon reveals off brand spools at $15 / 12-pack. I haven't tested them yet, but the price difference is so great that I'm going to give them a chance.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 19, 2023
T
Verified Purchase
TinaMarie
Boise, US
★★★★★ 4
Handy until I can purchase a mower
Style: String Trimmer, Style: String Trimmer
I've used this thing heavily 3 times now. I need a mower but haven't had the spare money for one yet so this is what I'm using! My yard is just under 1 acre. I'ma list some pros and cons I've noticed in my good use.. Pros: it works.. really well! As you can see I live in Florida so grass grows super fast in our rainy season if I slack just 2 weeks oh my.. the power is strong, it's easy to work. Auto feed is a big help. I bought extra when I made this purchase I can go through about 1-2 rolls throughout the whole yard. Cons: the wire. It gets in the way so much and my large yard I use a 200 ft cord but that's not always enough so I can't complete my job completely but enough I'm happy with. When the auto feed is low i noticed it constantly over feeds the line and that honestly hurts sometimes! It's and easy fix but after doing it 5 times you're over it. Id just put a new one on but I feel that's just a waste. In the future I will be replacing mine to get rid of the wire.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 26, 2025

recommand products