Product Name: SportMate Features: 3mm semi rigid Polypro shell. 1/8? EVA and Neolone top cover. it comes in your choice of full length or met length top cover. You can choose between 4 degrees extrinsic rearfoot post or no post. Non- skid bottom cover comes with full length. Non-skid heel protector standard with posting. This device is helpful for a variety of activity levels.