When baby is ready to make the leap to small steps, HALO SleepSack Early Walker combines safe sleep with mobility. Continuing the trusted bedtime routine, SleepSack Early Walker is designed with fitted foot openings that can tuck over feet at bedtime. It nestles your baby like a soft blanket that can't be kicked off or tangled - for sleep that's both comfortable and safe. Features an inverted zipper for easy diaper changes. TOG: 1.0 Ideal for temperatures 72 - 75° F Color: Mini Hearts. Gender: unisex. Age Group: infant. Pattern: Solid. Material: Polyester.