Portable Pet Backpack Dog Go Out Messenger Folding Bag Pet Supplies, Specification: Medium(Black)The product is shipped based on the color or size of the main image of the product page.1. Product material: waterproof meter high cloth2. Small in shape and powerful in use3. Ventilation and not stuffy4. Strong and durable, not easy to bite5. With zipper to prevent breaking free6. Product size: Small size 43x20x29 cm, recommended for pets of 2.5 kg; medium size 47x24.5x33 cm, recommended for pets of 4 kg; large size 52x24.5x33 cm, recommended for pets of 5 kg7. Product weight: about 600g for small, 660g for medium, 760g for large