Engineered and optimized for advanced trackday riders and racers

which combined with the large opening vent panel on the back

stretch fabric and durable mesh for optimal levels of comfort

rib at cuffs and hem

thermal mid-layer designed to be worn under the AMT-10 Jacket

s r10 top pad gray YGroup_123381570 Engineered and optimized for advancedReplacement top pad for Alpinestars S R10 Helmets, available in two sizes. Alpinestars official replacement parts. When selecting your top pad, please keep in mind that the same top pad can be used within sizes XS to XXL. The standard top pad is a size 15. If you want a tighter fit, then you can choose the crown pad with a size 20 which has +5 mm thickness more than size 15.