Whether we are ripping up the fire roads or putting in the miles on the singletrack, the SIDI Aertis Mountain Clipless Shoe is here to enhance our performance on the bike. Featuring an abrasion-resistant suede upper and finished off with SIDI's Firmor and Tecno-3 System closures, the Aertis Mountain Clipless Shoe has a secure fit and is super easy to get on and off. A stiff nylon MTB SR17 sole aids in power transfer to the pedals has a replaceable rubber toe spike, and has a slightly flexible design to aid in walking.