Product description Color:Black, dark blue, red, sky blue, black pink, color stripes Size details: M:32*20cm,suited pet bust under 24-23cm, weight up to 2.5-3.5kg L: 38*23cm,suited pet bust under 30cm, weight up to 3.5-6.5kg Material: Nylon + Oxford cloth Package content: 1*portable dog backpack 1.Tips: 2 sizes available -M, L. With this pet carrier, you can transport your four-legged friend in a simple and convenient way. It is suitable for small, medium dogs or cats. It is strongly recommended to measure the dimensions of your pet first and then take into account the weight support. 2.Material:Polyester material,durable and comfortable.Machine washable.Two mesh side panels allow maximum air circulation. Zippers on the two sides make your pet easy-in and easy-out. 3.Design Details:Legs-out and tail-out design keep your dog safe and comfortable when you carry your cat or dog around. 4.Convenience:Adjustable wide straps easier for you to wear and reduce pressure on your shoulders.Convenient for cycling,traveling,shopping,and walking outdoor with your pet. 5.Target Audience:Best suited for small medium pets puppy dog cat bunnyHands-free and front pack design to make your pet enjoy a soothing stroll with head out.