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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6
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Description
Alpinestars SM7 Helmet - Solid - Gloss WhiteFeatures Engineered for off roading racing, and is optimized to offer the perfect blend of superior ventilation and comfort in a lightweight, helmet while its supremely aerodynamic composite shell delivers exceptional impact protection A Head Fitment and Visor Detaching System, the SM7 is equipped with PLASMA technology at the lower side of the shell edge for optimum energy dissipation in case of contact with the collar bone area Key Features
Features
- Engineered for off-roading racing, and is optimized to offer the perfect blend of superior ventilation and comfort in a lightweight, helmet while its supremely aerodynamic composite shell delivers exceptional impact protection
- A-Head Fitment and Visor Detaching System, the SM7 is equipped with PLASMA technology at the lower side of the shell edge for optimum energy dissipation in case of contact with the collar bone area
- Key Features
- Aerodynamic profile design offers a smooth, streamlined shell free of any external channels and features that might act as a load point in an impact or compromise the overall integrity of the helmet's construction
- The shell's curvature promotes reduced friction on impact, allowing deflection and the most efficient transfer of energy to protect the rider's head from direct force and referred to the neck and spinal column
- Ultra-ventilated helmet with 20 individual intake and exhaust ports, not including the eye port, with 13 intakes and 7 exhausts, for optimum ventilation
- The fit can be further customized via the Alpinestars replacement cheek pads, which are available in all thicknesses and are exchangeable between all shell sizes
- Communication System Compatible — Cutaway section on the left-side of the EPS to seamlessly accommodate Intercom Systems, with earphone recesses on both sides for speakers
- Construction
- Linings are removable and washable by hand using warm water and neutral soap
- Fabrics have antimicrobial treatments
- Crown Pad — Crown pad and neck pad are elastically connected, for better oblique impact management
- Top Pad — The top pad is removable and adjustable in height thanks to the A-head system
- Cheek Pads — The cheek pads are fitted 3D foam, with an emergency extraction system (ERS), with a channel for hydration tube installation
- Cheek pads are interchangeable among all sizes
- Chin Strap — Chin strap is fitted with a 25 mm width nylon strap, stainless steel DD rings, removable covers for washing purpose
- Integrated channels on both sides to accommodate a hydration system
- Protection
- Visor Detaching System features a release mechanism is conceived to avoid the inherent weaknesses in other anchoring systems
- Visor is engineered to automatically detach from the shell when it is subjected to an impact energy greater than 15 Joules for optimum impact protection, regardless of the direction
- PLASMA inside; Alpinestars PLASMA technology is strategically-integrated into the SM7's side pads for high performance shock absorption in a critical area, significantly reducing risk of injuries
Certifications
- ECE R 22.06/DOT
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.8 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 4
I would by again!
Good and lasted for over a year. A good quality product.
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Reviewed in the United States on April 11, 2026
★★★★★ 5
I'll Take Three!
I recently purchased the DUMOS Ergonomic Computer Gaming Chair, and I couldn't be happier with my decision! This chair combines comfort, style, and affordability in a way that truly exceeded my expectations. The PU leather lumbar support provides excellent comfort and proper posture, making long gaming or work sessions much more enjoyable.
What really surprised me was the fantastic price—so good that I ended up buying three! I chose two in striking red and one in sleek blue for each person's room, and they all look fantastic. The build quality feels sturdy and durable, and the ergonomic design has already made a noticeable difference in my comfort levels.
If you're looking for a stylish, comfortable, and budget-friendly gaming or office chair, I highly recommend the DUMOS Ergonomic Chair. It’s a great investment in your comfort and style!
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Reviewed in the United States on October 19, 2025
★★★★★ 3
Very comfortable wonderful chair
I like the chair it was very easy to assemble makes no noise when I'm going across the floor the size was perfect for me the stability was great the screw quality was very easy it's all very well put together got it on sale value for the money very good how do you just meant no problems it was great
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Reviewed in the United States on September 14, 2024
★★★★★ 5
excellent quality, Good Support
I got this on sale for $67. The process to assemble it was very straightforward and used an Allen wrench. It was rated as the best item in its category and had five stars. I wouldn't consider it a gaming chair, Although it tries to be one. It feels more like an office chair that was glam up to be a gaming chair. But it does an excellent job at supporting a tall large individual, Excellent Support, Good posture. Worth every penny, But not in the same category as a typical gaming chair. Lack some of the bells and whistles had a typical gaming chair would have, But every bit the money I paid for it. If you want something nicer then you need to buy like a $200+ Gaming chair with the bells and whistles.
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Reviewed in the United States on June 13, 2024
★★★★★ 5
Very comfortable with good lower-back support
Most comfortable, well made, easy assembly office-gaming chair (very pleased)!
*I suggest, HOLD-OFF popping the seat onto the upper-cylinder until AFTER assembling the back-rest onto the seat/arm-seat with back-rest as a unit...can then be popped onto the upper gas-cylinder(Much more stable than fighting with chair freely rolling and turning) while attempting to aligning the holes assembling the back-rest.
Afterwards the seat with back-rest assembled can easily be popped onto to the upper-end of the gas-cylinder and we are good to go!
* do pay attention to using the correct bubble-packed bolts for each assembly, as directed
* all the holes align -up very precisely... so if screwing in the bolt(s) and after a couple-turns it gets hard-to-turn, we are 'cross-threading the bolt into the threaded hole...so back-out and realign the bolt as so it threads in very easy.
* the bubble-pack of bolts are clearly labeled so as we easily know which ones go where.
*0ne bubble-packet even includes a spare group just in case we lost one (like out in the grass-lawn)?
* Included a T-handle alien-head wrench (all needed for total assembly) very nice for having around if any re-tightening needed. all speaks Quality!
>>> Been using about a month now...And I REALLY like this office gaming chair
_ very comfortable cushioned well and excellent lower-back support
_ the faux-leather seems to be more thick and durable and stitching is NOT ripping-out (as my previous & more expensive chair had done with it's paper-thin faux leather)
_ easy assembled chair seems very sturdy and solid, (yet light weight), in moving around, (not some wobbly contraption as my previous more expensive chair).
_ a strong Five-Star rating!
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Reviewed in the United States on March 14, 2025