Calm and comfort baby and encourage restful sleep with a wearable, organic-cotton blanket ideal for year-round use. This lightweight sack soothes your little one, and its slim yet stretchy fit and bell-shaped bottom are designed to promote proper hip and shoulder development. Includes room thermometer and what-to-wear guide to help dress baby appropriately for sleep Two-way zip for easy diaper changes Bell-shaped bottom approved by the International Hip Dysplasia Institute for being hip healthy and promoting proper development in the hips and shoulder joints Arms-out sleeping Suited for room temperatures 75°F/23°C+ 95% organic cotton, 5% elastane Machine wash, tumble dry Imported Organic Content Standard (OCS)-certified. OCS uses third-party verification to confirm the amount of organically grown material in a final product