95% Organic Cotton, 5% Elastane Imported 𝐑𝐈𝐆𝐇𝐓 𝐒𝐈𝐙𝐄 = 𝐁𝐄𝐓𝐓𝐄𝐑 𝐒𝐋𝐄𝐄𝐏: Choose the SIZE S (SMALL) Swaddle UP baby sleep sack made for 8 – 13 lbs, and up to 62 cm / 25 in. Tap the size chart to confirm weight and height, then buy with confidence. The right weight-based fit keeps this arms-up sleep sack snug at the shoulders while hips stay free, stops fabric creeping over faces, reduces returns, and lets every tired parent enjoy longer, safer sleep night after night Preferred Arms Up Position: This baby swaddle allows babies to sleep in their preferred arms-up position for self-soothing, making it perfect for newborns who seek comfort. The snug fit helps reduce the startle reflex, enhancing sleep quality and duration. Organic and Safe Material: Crafted from organic materials, this newborn swaddle ensures a safe and gentle environment for your baby. The cream-colored fabric is soft and breathable, making it one of the best newborn swaddles available for swaddle me 3-6 month transitions. Versatile and Easy to Use: This transitional swaddle is ideal for various stages, from infant sleep sack to swaddle sack. Its intuitive design makes it easy to use, ensuring a secure, comfortable fit for your baby at all times, and makes diaper changes a breeze Lightweight Sleep Sack: Our newborn swaddle is made with Organic fabric and is ideal for the baby's delicate skin. This 1.0 TOG sleep sack is perfect for MODERATE room temperatures between 68°F & 75°F. Layer underneath for ideal temperature regulation Swaddle UP Helps Baby Self-Soothe: The unique, award-winning Arms-Up design of our sleep sack allows natural arms-up sleep, aiding self-soothing for longer sleep. 83% of parents reported an increase in hours slept by their baby when using Swaddle Up