The dog carrier backpacks have added a thicker foldable pad on lower back,giving you extra support and preventing the backpack bottom from digging into your lower back.Chest and belly strap helps distributing the weight and balance loading for your outdoor activities.Windened breathable padded shoulder strap and mesh back for comfortable wear.what an amazing dog hiking backpack that especially designed for you.This dog travel backpack can be worn as front facing dog backpack, keeps your puppy and kitten in your sight bringing them more security.Anti-escape metal zips and a built-in leash attached to the collar/harness, prevent escaping.Multi-function pockets on both sides for storing dog,cat essentials. With removable and hand washable soft bottom pad, with plush and PE rattan two sides,desinged for all season use.The pet carrying backpack has front and top entrances,making your pet easy to stick their head out.You can feed or play with them without putting the cat backpacks down. And the breathable mesh windows are designed for visibility and air ventilation, providing your pet a good view of surroundings and more fresh air. So they will feel relaxing and peaceful during journey.Product Specifications:S: 32x30x25cm suitable for use within 3KGL: 45x36x30cm suitable for use within 6.5KGPackage1*pet backpack bag