Parents, this HALO Sleepsack is seriously the safest way to keep your baby warm and cozy! As the #1 choice of hospital nurseries, it replaces loose blankets in the crib to create a safer sleep environment that reduces SIDS risk. The micro-fleece fabric is incredibly soft with a TOG 1.0 rating - perfect for moderate seasons or when layered with warmer sleepwear for cooler temperatures. The X-Large size fits babies 18-24 months, weighing 26-36 pounds and measuring 35-40 inches long. What's really amazing is the hip-healthy design that's been recognized by the International Hip Dysplasia Institute - it allows plenty of room for kicking and movement while staying securely on. The inverted zipper opens from the bottom for easy diaper changes without fully undressing your little one. The sleeveless design prevents overheating, and the arm and neck openings are sized for a safer fit that can't ride up. The moisture-wicking properties keep baby comfortable, and the quality holds up through countless washes. Whether you're transitioning from swaddling or just want the safest sleep solution, this Sleepsack gives you peace of mind while keeping your baby snug and happy all night long!