The backpack is made of high quality mesh fabric, lightweight, comfortable and breathable. Let your pets feel free and they won't feel suffocated or smelly. The mesh window is ventilated and visible, allowing your pet to breathe and relax freely, the mesh side and front pocket can help store belts, whistles, water, snacks, snacks and other necessities. The front hole can be adjusted with a strap according to the size of the pet, which helps reduce the burden. The extra belt with buckle keeps the backpack stable. The inner rope with clip can be attached to the pet's collar/harness to prevent the pet from jumping out or getting hurt. Make them more secure. Suitable for cats, small and medium dogs, very suitable for outdoor travel, tourism, camping and hiking, etc. Specs: Material: mesh cloth Size M: 30 x 34 x 16cm/11.8 x 13.4 x 6.3in, suitable for pets under 3kg Size L: 36 x 44 x 21cm/14.2 x 17.3 x 8.3in, suitable for pets under 7kg Package includes: 1 pet backpack(Size L) Go out with your pet: This backpack is a wonderful gift for you to carry your pet dog cat go out and travel. Breathable & Comfortable: Made from breathable mesh and polyester-fibre, the breathability is greatly increased, lightweight and Comfortable. Keep your pet visible: Peep Hole and Mesh Pockets Design: A drawstring opening neck hole on the top of the backpack to keep your pet stick their head out, make them ventilation and visible, enjoy the entertainment with their host, ensure its security and comfort.