Support your favorite team with the Happy Feet NCAA Sneaker Boot Slipper, these comfy slippers will keep your feet warm and cozy all season long! Officially licensed by the NCAA 100% polyester 1" foam rubber sole Non-skid bottoms. Sizes: XL M, L M, XXL M, M M, S M; Color: Oklahoma Sooners. Gender: Unisex. Age Group: Adult.