The RXL Mountain Shoes are the crown jewel in Bontrager's off-road shoe collection. From the ground up, the RXLs mean business. Bontrager's Silver Series carbon soles deliver the stiffness you demand for maximum power transfer plus provide just enough flex for comfort and walking. Speaking of comfort, you get Bontrager's customizable eSole insoles, breathable InForm uppers, no-slip heels and tongues that extend all the way to the toes for a custom fit and feel. You'll also love the ratcheting buckles and Velcro strap closures, and the aggressive soles, which offer serious traction on everything from loose rock to mud and even include removable toe spikes.