The One4Pets EVA Backpack Pet Carrier provides the ultimate in pet portability, whether strolling about town or hiking in the woods. Your small dog can sit, stand or even lie down comfortably in the spacious interior. The zippered mesh opening allows your pet to stick its head out, while the adjustable security leash inside the bag ensures stability. The pack is light-weight yet sturdy and can be carried on the back, chest or across one shoulder. Black and grey; size small measuring 15-1/2"-17" X 11" X 13-3/4" for pets up to 26lbs. Bonus - the small size fits under most airline seats.