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- USA
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Ships within 48 hours · Estimated delivery Jul 4 - Jul 9
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For Your Every Summer RSVP, with Code: SUMMER15
Description
alpinestar gear Alpinestars Supertech SM3 HelmetEngineered for MX, Enduro, and off road riding, the SM3 Helmet integrates advanced technologies and innovations designed to enhance ease of use, comfort, and impact protection. Key Features Advanced Shell Construction: This helmet features a thermo injected shell incorporating a special polymer blend enhanced by varying degrees of thickness that is engineered to deliver the optimal combination of impact protection and lightweight. The SM3 medium
Engineered for MX, Enduro, and off-road riding, the SM3 Helmet integrates advanced technologies and innovations designed to enhance ease of use, comfort, and impact protection.
Key Features
- Ventilation: Maximized ventilation and high levels of heat transfer exchange thanks to 10 inlets and seven exhaust ports.
- Rotational Acceleration Force Protection: Alpinestars patented low-friction coating is applied to the inner part of the main EPS liner to reduce the rotational acceleration forces that can result from certain oblique impacts. This layer essentially acts as a slip plane to mimic the brain’s own low-friction cerebrospinal fluid, which is the body’s natural defense against oblique impacts.
- Visor Release: Patented visor release system ensures the visor is released with the correct pre-determined amount of force, effectively reducing the forces on the rider’s neck during an impact.
Construction
- 5 EPS inner parts with 4 densities to effectively manage volume and impact perfromance.
- Hydration tube channels are integrated into the helmet’s cheek pads for convenience and performance.
- Comfort liner is constructed using recycled materials for a lower carbon footprint.
- The fit can be tailored to the rider’s head thanks to the helmet’s crown and cheek pads, which are available as genuine spare parts in different thicknesses.
Protection
- The inner and outer surfaces are engineered to minimize the effects of oblique impacts.
- Equipped with an Emergency Release System and removable cheek pads to permit the safe and easy removal of the cheek pads while the helmet is still on, while the 3D contoured foam ensures rider comfort.
- Soft textile chin strap is 25mm for optimal safety and rider comfort.
- Stainless steel D-rings ensure a tight and secure fit.
- The SM3 helmet conforms to both DOT certification and ECE 2206 homologation for use worldwide.
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
4.0 ★★★★★
Based on 107 reviews
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Product Reviews
★★★★★ 5
Great suit
Color: Light Grey (Stretch Fabric), Size: X-Small, Color: Light Grey (Stretch Fabric), Size: X-Small
My son wore on 2 different occasions. Very nice for the price. No one could believe what we paid for it.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Very high quality suit for the price! Might as well buy, then rent.
Color: Deep Grey (Stretch Fabric), Size: X-Small
I bought this for my son for his Prom, as he decided to go last minute. He weighs around 125 pounds and is about 5'11. The XS fit was pretty amazing. As the supplier says, follow the size chart on the second picture. There is also some stretch to the material and the pants have belt loops. The only thing we noticed that we didn't like is that the sleeves were a little large at the opening around the wrist. Since the cuff-links are sew on, there isn't really on easy way to adjust this. All in all, this was a great purchase and I would highly recommend YND suits.
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Reviewed in the United States on May 20, 2024
★★★★★ 5
Good buy for sure.
Color: Burgundy (Stretch Fabric), Size: X-Large
The suit looks and feels great for the price I’m 6’3 190-200lb and ordered a size XL. I’m going to have the sleeve dropped a tad bit and waist taken in. The hem is perfect and to my liking. Will be buying 2-3 in the future.
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Reviewed in the United States on March 11, 2026
★★★★★ 5
We’re happy!
For the price, this suit was great. My son is a bigger guy and when we rent tuxes, the pants always look terrible. This one, we were happy with. He usually wears a 2x in clothes but we sized up to the 3x. He’s 6’2” and prob 270. Maybe more but the vest was still a little snug.
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Reviewed in the United States on October 14, 2025
★★★★★ 5
Caviar and Champagne look for a hot dog and beer price!!
Color: Black (Stretch Fabric), Size: Large
At this point in my life, my days of spending close to $1K for a suit are over. Now, more worried about saving enough money for retirement AND my two kids' college funds. So when I was invited to a "black tie affair" I thought, "Crap. I don't own a tuxedo and will have to rent." Calling my local tux rental shop, I was SHOCKED at how much a one-night rental would cost (average $150/night - yes, it's been over 20 plus years since I had to rent a tux but wow)! So my wife suggested I look on Amazon and see if there was something that might work.
After seeing the reviews for the YND Slim Fit tuxedo, I decided to take a chance. And boy, am I glad I did!! I have been thoroughly impressed. The value for money is outstanding—this suit offers a high-end look and impeccable fit at a fraction of the cost compared to suits 10 times its price.
The suit exudes sophistication and style, making a powerful statement. The attention to detail in design is evident, and the finish is almost on par with luxury suits that come with a hefty price tag. The fit is nicely tailored for an "off-the-rack" suit, not too boxy or not too "slim" (I'm 6'0, 190lbs, and purchased the 'Large'). The suit highlights the best features while providing optimum comfort.
In summary, this suit is a true gem, offering exceptional value, a remarkable look, a superb fit, and style that rivals much more expensive options. Highly recommended for those seeking quality without breaking the bank.
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Reviewed in the United States on October 13, 2023