The Sidi Heimx cycling boot provides weather resistance and durability with the new Gore-Tex EPE Membrane with Ripstop, providing a flexible and scratch-resistant fit. Enjoy ultimate stabilization and control with anatomical heel construction and Firmor lateral support technology, all without the extra weight. The Millennium Fit ensures comfort and stabilization for everyone, while high-density Dyneema dials offer a personalized fit. The X2NC sole with stiffness 7 delivers the perfect balance of riding and comfort, complemented by grip sole inserts for enhanced control. Reinforcements on the toes and heel ensure lasting durability, making it unmistakably Sidi. -Gore-Tex EPE membrane is environmentally friendly and 100% PFC-free -Outer features ripstop material to keep water out with a flexible fit -Anatomical heel design for sustained pedaling and comfort -High-density dial system with Dyneema is designed to last while maintaining a secure fit -Firmor lateral technology maintains the highest level of lateral stability -Winter-proof design to maintain thermal balance -X2NC sole allows you to keep a great level of control -Designed for durability with a reinforced toe