Alpinestars S-M3 Jettson Youth Motocross Helmet

Original price was: $241.23.Current price is: $73.36.

Clothing Size Conversion Chart
Category US EU UK Chest (in) Waist (in) Hips (in)
Men XS 44 34 32-34 26-28 33-35
S 46 36 34-36 28-30 35-37
M 48 38 38-40 32-34 39-41
L 50 40 42-44 36-38 43-45
XL 52 42 46-48 40-42 47-49
Women XS 32 6 31-32 24-25 33-34
S 34 8 33-34 26-27 35-36
M 36 10 35-36 28-29 37-38
L 38-40 12-14 37-39 30-32 39-41
XL 42 16 40-42 33-35 42-44
Youth XS 128 7 26-28 23-24 26-28
S 134 8 28-30 24-25 28-30
M 140 10 30-32 25-26 30-32
L 146 12 32-34 26-27 32-34
XL 152 14 34-36 27-28 34-36
Pants Size Conversion Chart
CategoryUSEUUKWaist (in)Hip (in)Inseam (in)
Men284428283430
304630303631
324832323832
345034344033
365236364234
Women0324243430
2346253530
4368263631
63810273832
84012284032
Shoes Size Conversion Chart
CategoryUSEUUKFoot Length (in)
Men6395.59.25
7406.59.625
8417.510
9428.510.25
10439.510.625
114410.511
124511.511.25
134612.511.625
Women5352.58.5
6363.58.875
7374.59.25
8385.59.625
9396.510
10407.510.25
11418.510.625
12429.511
M (Unisex)5374.58.75
6385.59
7396.59.5
8407.510
9418.510.25
10429.510.625
114310.511
124411.511.25
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Description

Alpinestars S-M3 Jettson Youth Motocross Helmet The new S-M3 Jettson Youth Helmet has been specifically designed for teenagers and younger riders. Optimized for MX, enduro, and off-road use, it incorporates numerous technologies and innovations from adult helmets to offer the optimal blend of performance, protection, and comfort. Features: Lightweight construction: Thermally injected shell made from a special polymer blend with varying thicknesses for an optimal combination of impact protection and low weight Material: Outer shell made from impact-resistant thermoplastic, available in three sizes (Youth Small, Youth Medium, and Youth Large) Customizable fit: Helmet shell and cheek pads available in different thicknesses as replacement parts. Youth Medium (YM) and Youth Large (YL) sizes have the same EPS size to grow with the rider. Youth Small (YS) has a smaller EPS size and special fit for 3-4 year old children Multiple densities: Inner lining with different densities for better impact protection and reduced overall weight Angled impact protection: Inner and outer surfaces minimize the effects of angled impacts. Patented low-friction coating reduces rotational acceleration forces Ventilation: 10 air intakes and seven exhaust vents for maximum ventilation and heat transfer Visor: Designed to improve airflow. Patented visor release system reduces forces in the event of an impact Comfortable inner lining: Made from recycled materials for a lower carbon footprint. Integrated channels for drinking tube in the cheek pads Safety features: Soft textile chin strap (25 mm wide), emergency release system and removable cheek pads for safe removal, rustproof D-rings for a secure fit Specifications: ECE 22-06 Weight: 1060 g Double D-ring closure Alpinestars has introduced its own standard to test the chin of the helmet under harsher conditions than the homologation standard. Optimized shell thickness and structure for superior impact performance Comfort and safety: 3D-shaped foam for improved rider comfort

Additional information
color

Size

Y/L (52/53)

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Y/M (50/51)

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Y/S (48/49)