I bought these half a size too small for me and wore them one time. I hope you can enjoy them! Fabric type Synthetic-and-rubber Care instructions Machine Wash Origin Imported Sole material Rubber About this item Go Further: Our original Altra EGO MAX foam is designed to provide added energy return and a responsive, yet soft, comfortable feel Push Yourself: Balanced Cushioning places your heel and forefoot the same distance from the ground to encourage proper, low-impact form throughout your run Get Comfortable: Signature Altra FootShape toe boxes allow your toes to spread and encourages proper, low-impact form throughout your run Stay Comfortable: Altra's FootPod Technology maps the bones and tendons of your foot to encourage natural movement underfoot