Nike Sportswear Khaki Fleece Overalls for big kids, size M. This one-piece overall features a solid khaki color, Navy buckle closure with adjustable straps, and pockets. Made of 100% polyester fleece fabric, this activewear/casual garment is machine washable. Designed by Nike, it is a unisex kids' piece with an inseam of 27 inches, suitable for various occasions.