Sleep Shirt Or Cover-Up "How to sleep with a Dog" - Learn the "How To's" of sleeping with your dog when you own one of these colorful fun and informative sleeper shirts! The artwork is silkscreened on a 100% Cotton sleep tee shirt. One size fits most. The silkscreened artwork is on a white sleep night shirt. Snuggle up with your dog with this humorous night shirt. This 100% cotton jersey shirt works well as both a sleep shirt or beach coverup. Our sleep shirt comes packaged in a matching, 100% cotton drawstring bag. (Pictured) Measures approximately 37" long, chest size is approximately 48".