Completely redesigned to become our partner in crime in our fastest single track missions Five Ten Kestrel BOA Mountain Bike Shoes Lightweight durable and completely comfortable. Made from recycled materials Abrasion-resistant and breathable upper features a combination of Velcro straps and BOA system resulting in one of the most secure and customizable fits on the market. This Kestrel interaction continues the tradition of ultra-sticky Stealth rubber on the outsole , but in this case the Stealth Marathon Rubber lugs are backed by a full-length plate fiberglass reinforced for incredible power transfer.