Beach and Back Onesies. Super soft 100% airlume combed ring-spun cotton (pre-shrunk). Sizes smaller than 2T (3/6 months, 6/12 months, 12/18 months, and 18/24 months) are printed on onesies. This design is also available in toddler & youth sizes. All of our apparel is hand printed in our shop using only high quality, non-toxic inks!