Halo transition sleep sack makes it easy to move from a full swaddle while still controlling the startle reflex for longer sleep stretches. Its unique 3-layer design and ¾ sleeves offer a comforting weighted feel without unsafe weighted components or excess filling. • Allows for safe rolling and movement for self-soothing • Sleeves help control startle reflex • Hip healthy; approved by the International Hip Dysplasia Institute • Extra long and roomy for extended use • Zipper cover to prevent irritation • Hypoallergenic SuperSoft bamboo fabric