Pet Teek Pet Carrier Added security and back support for added comfort and ease of use. Easy to take on and off and easy to store. Machine washable. No buckles, rings, snaps, clasps or bulky padding. Specially designed to distribute weight on both shoulders with greater back and shoulder support. Made of entirely 100% cotton knit fabric with cross stretch. Soft breathable, machine washable and dryer safe. Creates ideal environment for disabled pets or pets with special needs. 4 comfortable positions to conveniently carry pets in style. Sizes are for the person carrying the pet. Carrier is durable enough to carry pets from birth to 25 lbs.