EPE FOAM, Waterproof Material, PU leather. Product Dimensions: 51×50×14 cm | 20 × 19.69× 5.51 in Product Weight: 1 kg | 2.2 pounds Structure: Shoulder Strap, Chest Support, Backrest, Crotch Strap, Elevated Headrest, Floating Tail Wing, Safety Lock, Solid Inner Shell