Homdox Pet Cat Door Flap for Medium Large Cats Dog Door Entry Pet Door with Comb Freely Coming in and Going Out 4 Way Locking Lockable Pet Cat Dog Door Small Cat Flap White (11.6 x 7.6 x 1.1 inches) Note: S size fits about 0-2.2 kg weight pets. The length of the S size front dog carriers is 9.5 inches, you can reference the length of your pets. Pet carriers are specially designed for your lovely pet. With the help of this, you won't worry about losing your pet dog while going out. Small Size 9.5 x 6.3 x 4.8 inch (L x W x Bottom Width), Flat Chest: 16.8inches. Pet travel carrier works fine, can let the pet with the owner of zero distance contact, it is easy to carry and safe to use. You can take your beloved dog together anywhere and anytime when you want with the dog front carrier/ dog backpack carrier. Reflectors and bright colors for high visibility and safety; keep the pet's head and legs outside; adjustable back strap can reduce the burden. Strap widening design that make you much more comfortable to carry your pet. The bag outside design with breathable mesh, is breathable and comfortable, a good front dog carrier for you to choose. Suggest for pets less than 4.8lb in weight & pets with chest circumference less than 12 inches.