The Pet Life capacious expandable wire folding lightweight collapsible crate is composed of heavy-duty Ballistic nylon and mesh with bendable yet sturdy built-in flexible extenders that Velcro into place and hold up the 2 outer mesh expandable sides. Fully expands on both sides and collapses and folds. Perfect for multiple pets. Lightweight and great for traveling and indoor or outdoor usages. Features a spacious frontal breathable mesh entrance that rolls up and Velcros into place great for added sunlight visibility and exposure when opened with a back mesh window. Features dual reinforced stitching for added durability. Comes with an included Reversible plush inner cushion that extends to cover the full surface area. Available in multiple colors and sizes. Sizing Dimensions: (inches) lxwxh XS: 19.3x13. 4x13. 4 sm: 22.8x15. 7x15. 7 MD: 27.5x20. 5x20. 5 lg: 31.9x22. 8x22. 8 XL: 35.8x24. 8x24. 8.