Gravel riding blurs the line between road efficiency and off-road durability, and footwear for the discipline needs to handle both pedaling power transfer and the inevitable hike-a-bike sections that come with mixed-terrain adventures. The Asper applies Sidi's construction expertise to this space with a shoe that prioritizes walkability and protection without abandoning the secure fit that keeps your foot stable when you're putting down watts on smoother stretches.

The nylon and glass fiber sole sets the Asper's character. With a stiffness rating around 5-6 on Sidi's scale, it delivers enough rigidity for efficient pedaling while allowing the natural foot flexion that makes walking on uneven terrain manageable. That balance matters when your route includes gravel roads, fire roads, singletrack connectors, and the occasional portage over obstacles. The Ergo-feel sole design maintains a natural rolling motion when you're off the bike, so you're not shuffling awkwardly through trail sections or café stops.

Three velcro straps handle closure duties, providing quick adjustment and a secure fit without the complexity of dial systems. The straps allow you to fine-tune tension across the forefoot and instep independently, accommodating foot swell during longer rides or dialing things down when conditions change. The Millennium Fit last represents Sidi's updated approach to foot shape, running slightly wider than their traditional racing lasts while maintaining the heel stabilization that prevents unwanted movement during hard efforts. If previous Sidi shoes felt narrow, the Asper may work where other models didn't.... Read More