This dog carrier backpack offers safety, comfort, and durability for your beloved dog!! It's only been used once, so it's in great condition ^_^ To prevent the zipper from coming down during use, you can secure the hook attached to the zipper to the buckle around the neck of the backpack for safety. Includes a removable storage mini-bag (35x22cm) ■ Size: M ■ Color: Black (as shown in photo 2) - Model: K9 Sport Sack Plus 2 - Color: Jet Black - Design: Backpack-style carrier Thank you for looking.