Halo SleepSack Base Layer - White Cupcake The perfect partner to any HALO SleepSack wearable blanket, the HALO Base Layer gown from ComfortLuxe performance fabric provides easy diaper access while keeping baby"s sensitive skin comfortable and healthy. Awarded the Seal of Acceptance by the National Eczema Association, ComfortLuxe fabric helps to promote healthy skin and manage skin irritations by regulating body temperature and wicking moisture away from baby"s skin where it evaporates quickly (twice as fast as cotton). Wearing this breathable base layer under a SleepSack wearable blanket will keep your baby warmer when it"s cool and cooler when it"s warm, for healthier skin, and safer, more comfortable sleep. 100% polyester ComfortLuxe. Size newborn fits 6-12 lbs.