Saucony Guide 15 has been designed with comfort and fit as the top priority and is built using lightweight durable materials, and a softer PWRRUN cushioning formula to grant a smooth yet powerful stride from heel to toe. The deeper footbed construction allows the foot to sit more securely in the shoe for excellent support when training. New lighter PWRRUN cushioning, providing just-right softness that's responsive enough to tackle as many km's as you wish HOLLOW-TECH, giving your foot the support it needs in a lightweight, minimalistic way. FORMFIT surrounds the foot with a made-for-me feel that can accommodate a wide range of foot shapes comfortably. Now with Recycled materials.