Gently used Very good condition The imported Zen Sack is machine washable, made from 100% breathable cotton, and scientifically designed for self-soothing and sounder sleep. The Zen Sack® Classic is a gently weighted breathable sleep sack that calms like your embrace by providing comforting pressure only where babies are naturally held. Made with 100% bamboo cotton fabric. Incredibly soft and breathable but cozy enough to keep baby warm, the Zen Sack® Classic wearable blanket has a TOG rating of 0.5 for year-round comfort. Large (15-24M). Perfect for tummy sleepers. The Zen Sack wearable blanket is reversible and can be worn backward - perfect for babies who roll Special features. Unlike a standard sleep sack, the Zen Sack features gently weighted Cuddle Pad™ technology that soothes like your embrace. Adjustable snaps grow with your baby and a top-quality 2-way zipper ensures easy changes.