CozyCabin Portable Soft Padded Small Pet Single Shoulder Carrier for Bike Hiking Bag Dog Carrier Sling Purse for Travel Outdoor Material: breathable mesh+Leather, the design is very convenient to take care your pet when going for walk This sling keeps your pet close. Hands-free sling feature is perfect for daily use, walking, strolling at the mall and any casual occasion. You can take your pet anywhere, anytime. Special hook design which connects to pet's collar in order to protect your pet's safe Fine workmanship, durable and beautiful outlook.it is comfortable and won't hurt your back Dimension:Size M 15.0" 7.8" , neck hole size 4", Acceptable weight within 6.6 lb of small pets Size L 17.7" 11.0" , neck hole size 5", Acceptable weight within 13.2 lb of small pet