Alpinestars Alps Kevlar Knee Guard Highly flexible and lightweight knee guard Bottom elastic studied to stay just above calf and keep protection in place Highly flexible and lightweight knee guard constructed from breathable laminated impact foam and mesh Silicone printing on inside lining keeps the guard in place Liner offers progressive protection while providing soft contact on the skin Stretch mesh panel for better stability of the guard while riding Bottom elastic studied to stay just above calf and keep protection in place