One for Pets The One Bag Pet Carrier As your pet grows or when needed expand The One Bag by unzipping the compartment at each end Detachable shoulder strap adds flexibility Fold The One Bag flat and store in the carry bag that comes with every The One Bag The small size is airline friendly A security leash inside the bag helps restrain your pet or keep him/her stable Car Seat Belt and Rolling Luggage Fixture Top opening and a door on each end Size: Small: 17.0 x 10.0 x 9.0 H(Before Expansion) Carrier Weight: 2.5lbs/1.1kgs Suitable for pets up to 22lbs/10kgs ; 21.5 x 10.0 x 9.0H (After Expansion)