BFMXS Size: X-Small (15" H x 8" W x 4" D) Features: -Wheelchair.-Adjustable aluminum frame.-Rust-proof hardware.-Neoprene front and rear harness for superior comfort.-Easy clip-on and off front and rear harness.-Hex wrench adjustable height and length.-All-terrain pneumatic wheels with sealed bearings.-Best Friend Mobility wheelchair harnesses are designed to let our pets go to the bathroom easily.-Carts have a maximum width of 24 for easy clearance of standard doorways. Includes: -Assembly manual included. Options: -Available in sizes based on dog weight: XX-Small (0-4 lbs), X-Small (4-15 lbs), Small (15-40 lbs), Medium (40-60 lbs), Large (60-100 lbs), X-Large sizes (100-175 lbs). Construction: -Constructed from lightweight and durable materials. Assembly Instructions: -Some assembly required. Dimensions: -XX-Small dimensions: 12 H x 6 W x 3 D.-X-Small dimensions: 15 H x 8 W x 4 D.-Small dimensions: 18 H x 12 W x 5 D.-Medium dimensions: 21 H x 12 W x 5 D.-Large dimensions: 25 H x 19 W x 5 D.-X-Large dimensions: 26 H x 20 W x 5 D.