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- USA
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Ships within 48 hours · Estimated delivery Jul 5 - Jul 10
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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
4.5 ★★★★★
Based on 1791 reviews
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Product Reviews
★★★★★ 5
Great bag!!
Color: Red, Color: Red
I love this large bag enough books, clothes for sleepover, groceries I love this bag great for the price and sturdy. The material is great !!! Has pockets for cell phones and roomy and the size is great comfortable and adjustable strap is great as well.
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Reviewed in the United States on July 23, 2025
★★★★★ 5
Great little budget tote
Color: Black, Color: Black
I use this as my everyday bag (with an organizer inside) and it's the best little bag I've ever had. It's sturdy but soft, the strap is easily adjustable to a bunch of different lengths, and it's roomy enough in the inside for average everyday needs plus the occasional extras! The material is thick enough to be good quality, but not overly inflexibly thick. I also covered mine in pinback buttons and enamel pins, and the fabric is really good for pins - They go on firmly and don't slide around. I saw a lot of complaints about smell, but mine had no bad smell at all!
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Reviewed in the United States on April 27, 2025
★★★★★ 5
Crossbody Purse with a choice of a bunch of colors to choose from!!
Color: Red
This is a great crossbody purse for anyone!! It holds my wallet, makeup bag, phone as well as a ton more space to add more stuff in!! I currently own the red and the army green. This is a great purchase!
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Reviewed in the United States on November 23, 2025
★★★★★ 4
Decent bag
Color: Light Grey, Color: Light Grey
2.5 year update: I'm ready to replace my beloved grey bag, but most of the colors more than doubled in price!! I get that there's inflation, but that's insanity. It was $10.99 when I bought in 2019. Forget this brand. Dropped a star.
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Original review:
In the photo, that's a 32oz Nalgene bottle and a small, Periea Chelsy organizer (found on Amazon, 8.5 inches long). 9 months of near daily use so far, no issues! I even got oil and ink stains on it, and they came right out.
Great runaround bag, not too big not too small. Love it. First things I did, removed the label and coated it in Kiwi Protect All spray.
Pros:
- 2 pockets inside are deep and sooo useful
- very cute
- comfortable and very light to carry
- adjustable strap length, for shoulder or crossbody
- price is right
- machine washable
Cons:
- zipper is a bit "sticky"
- words on the label are classic Chinese-English, reminds me of Taiwan. Lol
- no inside lining
- fabric could be thicker. It's thin for canvas.
- metal hardware is not stainless steel
Neutral:
- medium size (model must be child size, pay attention to dimensions. I'd say it's similar to standard disposable grocery bag size, cept taller)
- durability is questionable. It's not going to come apart if you look at it wrong, but I definitely wouldn't try using this as a bookbag either. For the price, it seems sturdy enough.
When this bag dies, I will 100% be buying another one if it's still available. Love it.
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Reviewed in the United States on February 15, 2019
★★★★★ 5
Great value for amazing bag
Color: Pink
Great deal on this tote bag, the strap length is extremely adjustable for size and different wearability. It has good storage space and no pockets inside but works well. It looks great with different colors I have the pink and my boyfriend has the coffee one which looks amazing. I added pins to mine and looks great! Love this bag
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Reviewed in the United States on October 10, 2025
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