Fits small to size, take ½ or a full size larger. The ultimate intersection of luxury and performance, the APL TechLoom Bliss running shoe is the lightest running shoe ever at 6.8oz. It features a slip-on design and custom-milled elastic strap that allows for quick ingress and egress providing the ultimate comfort and a seamless fit. APL's proprietary Propelium® technology is designed to maximize energy generation and provide superior comfort.