HALO Sleepsack 100% Cotton Wearable Blanket TOG 0.5 – Baby Blue, X-Large

Safe, breathable warmth for growing babies

The HALO SleepSack is a trusted wearable blanket designed to replace loose blankets in the crib. This 100% cotton interlock version offers a soft, breathable layer that remains with baby through the night, helping to create a snug, uninterrupted sleep space without the risk of tangled fabric around the face.

With a TOG rating of 0.5, it provides just-right warmth for warmer seasons or climates, and can be layered with lighter sleepwear when temperatures dip. The double knit cotton interlock feels plush yet flexible, delivering a gentle stretch that accommodates natural movement while keeping baby comfortably contained.

Key design benefits that matter in daily life

• Hip Healthy design — a roomy sack supports natural leg movement while staying securely on the baby, recognized by the International Hip Dysplasia Institute.
• Inverted zipper opens from the bottom for easy diaper changes without fully waking the baby, a practical feature for night-time routines.
• Sleeveless cut helps reduce overheating and provides freedom of arm movement, ideal for warmer nights or layered outfits.
• Safe, adjustable fit — arm and neck openings are sized for a safer fit, keeping baby comfortable as they grow.

Size guidance and seasonal versatility

The Extra Large size is designed for babies weighing 26–36 pounds, typically aged 18–24 months and 35–40 inches tall. This makes it a long-lasting option as your child grows, particularly in active sleep stages when a blanket may be kicked off.

Usage ideas include wearing the SleepSack over light sleepwear during warm periods, or layering with warmer sleepwear when nights cool down. Its soft, durable cotton interlock fabric supports everyday wear and repeated washes, helping you maintain a calmer bedtime routine with fewer blanket interruptions.

Why parents often choose HALO SleepSack

Hospitals nationwide use the SleepSack, and many families report a smoother night thanks to a constant, cozy layer that travels with baby from crib to nap. While results vary by child, the design aims to foster a secure, comfortable sleep space without the blanket-sh scenario that can disrupt rest.