Lulujo Muslin Sleep Sack - Sand (Small)Use this sleep sack as a wearable blanket to keep little ones warm while they sleep and to eliminate loose blankets in the crib. Made with two layers of soft, breathable muslin to keep temperature regulated. Wear over pyjamas for extra comfort. Features include: 1. 0 TOG rating Two layers of 100% cotton muslin The one way zipper is secured at the top to keep the neck opening closed for safety 100% cotton becomes even softer with use breathable muslin