Weighted Transition Swaddle. These retail for $92 each Hunter Green, 3-6 months Slate Blue, 6-9 months Both are lightly used and still in excellent condition & have been laundered. designed to reduce wake-ups and to help transition your baby safely to arms-out sleep. This sleep sack features innovative, 3/4 length gently weighted sleeves that fit snugly to help reduce the Moro (startle) reflex. EveryBODY is different so the sleeve length may fall anywhere between your baby’s elbow and wrist.