100% Cotton Imported ease the transition. HELPS WITH SWADDLE TRANSITION - Designed for back-sleeping babies aged 3-6 months who are ready to move on from traditional swaddling. Offers a cozy, contained feeling that SOOTHING DESIGN - Provides a snug fit that may help calm the startle reflex, supporting more peaceful rest during naps and nighttime. SOFT COTTON - Features 100% cotton inner and outer layers that are gentle on baby's skin, creating a cozy and comfortable sleep environment. EASY DIAPER CHANGES - Double zippers allow for quick and convenient diaper changes, while open hands and feet help support comfort and self-soothing. USE SAFELY - For back sleeping in a bare crib only. Discontinue use when baby shows signs of rolling over or exceeds size range (Small: 12-18 Ibs, Large: 18-21 lbs).