Hundred Acre Wood - ZippyCrafted from hypoallergenic, ultra soft bamboo blend (95% viscose, 5% spandex). Stretchy, breathable fabric promotes thermoregulation in every season. Durable construction lasts up to three times longer than average cotton sleepwear. Designed to grow with infants and toddlers for an extended fit. Fold over convertible wrist and ankle cuffs for added comfort and coverage. Two way branded YKK zipper for effortless changes. Tagless design for irritation