Nothing is more important than sleep safety for your newborn. The HALO SleepSack Easy Transition replaces loose blankets while keeping your baby warm and cozy throughout the night. The SleepSack Easy Transition helps control the moro reflex for babies who no longer like to be swaddled, but still need a bit of security around their arms. The HALO SleepSack Easy Transition is lightly quilted with sleeves and 4-way stretch cotton to help give your little one a snug fit without overheating. It is a warm, cuddly blanket your baby cannot kick off, ensuring baby sleeps soundly throughout the night. Its roomy sack design supports continued healthy hip development. Plus, a two-way zipper with tab covers at top and bottom allows for easy dressing and diaper changes. Features: -Unique sleeve design helps reduce startle reflex without overheating. -Snug upper body allows for easier post-swaddle transition. -2-way zipper for easy dressing and diaper changes. -"Back is Best” reminds all caregivers to put baby to sleep on their back. -100% cotton 4-way stretch for snug, comforting fit -TOG 1.5; size small fits 13-20 lbs, size medium fits 19-24 lbs.