These stylish Futsole® slip-ons caress your feet while keeping them dry and comfortable – indoors and outside! They have ultra-flexible soles and 4-way stretch Lycra® uppers to prevent irritation and conform to the natural contours of your feet. The breathable, stretchable neoprene is paired with soft rubber, skid-resistant soles for all your daily activities including yoga and exercising. Neoprene. Choose: Blue Paisley, Butterflies, Black or Royal Blue. Available in: Medium (Sizes 7-8), Large (Sizes 8.5-9.5) or XL (Sizes 10-11). If you are in between sizes or if your feet are wider, thicker or sensitive to tightness in the toes, order one size up.