70% bamboo*, 30% organic cotton (*viscose from bamboo) * reversible patterns, with black and white patterns promoting baby"s visual development * o/s - one size (recommended for babies 6-15 lbs / 2.5 - 7 kgs) * available in 1 packs or gift-ready 2 packs * for minimum shrinkage, hand wash and air dry or machine wash/tumble dry warm