Love to Dream Swaddle Up Original Sleepy Sack allows baby's arms to swaddle up in a natural sleep position. Hands Up is a self-soothing position that helps baby fall asleep faster & sleep longer. Hips splay in a healthy position without displacement. 2-way zipper for easy diaper changes and a slot for stroller strap. No wrapping required. 4 colors & 3 Sizes make this a great gift choice.