The ClevaMama baby swaddle wrap to sleep is so snug that it helps to recreate the security and comfort of the womb so your baby can sleep more peacefully and for longer. The snug fit allows enough movement to be comfortable, while helping to prevent startle reflex, one of the main reasons your baby wakes during the night. Swaddling just the upper torso ensures that legs and hips have enough room to move naturally and helps prevent hip dysplasia. Easy to use adjustable wraps means baby can stay swaddled as they grow. , , Medical research suggests that babies will sleep better and longer if they are swaddled. Wrapping should not be too tight and allow plenty of room for legs to bend and move freely. Swaddle size: 100 cm width - From wrap end to end, 30 cm width - for main body, 58 cm full length and Tog rating: 0.5.Machine washable (40 degree ).