Stage two of the swaddleme sleep system with a proven design for safe swaddling and better sleep extra soft adjustable wings provide a perfect snug fit even for wriggly babies secure design creates a cosy womb like feeling for baby and prevents the startle reflex that can wake up your infant designed with leading safe sleep experts swaddlemereg is trusted by parents around the globefeatures soft material secure design womb like feeling prevents the startle reflex