The Dog Helios 'Immortal-Trek' Waterproof Rectangular Travel Dog Bed is composed of a silky-smooth sponge-like material that is entirely Waterproof coated that wicks-away liquid. This Dog Mat is inner-lined with High-Density polyfill that provides complete comfort when lounging. Perfect for travel - this bed features an embroidered side handle bar for convenient mobility. Features Waterproof Micro-gripped backing on the reverse which makes it durable for outdoor surfaces. The side of this bed is also geared with a zipper that when zipped opened enables the inner cushion to be removed and is further Machine Washable. Sizing Specifications: (Inches) L x W x H : Small: 27.6' x 21.7' x 3.5'