Our cozy collection is made from buttery soft bamboo viscose (aka unicorn) fabric. Our bamboo fabric blend is gentle on sensitive and eczema-prone skin, and each piece is tagless for ultimate comfort. This amazing unicorn fabric stays cool in summer and warm in winter to help keep your kiddo at the optimal temperature. Featuring super stretchy fabric and extra length that allows our bamboo styles to fit your kids longer than average pajamas. Our Bamboo Cozy 2 Piece Collection Features: 220 GSM all-season, insanely soft bamboo viscose fabric. Match all of your kiddos with coordinating prints. Cozy long sleeved tops with matching pants. Super stretch fabric and extra length for longer wear. No annoying snaps or buttons and no irritating interior tags. Snug fit to meet CPSC safety regulations compliance. FABRIC & CARE: 95% viscose from bamboo, 5% spandex. Machine wash cold, inside out, dry low. Wear snug fitting, not flame resistant. Featuring our Updated Fit, a slightly more generous feel than our Classic Fit. We recommend your child's normal size.