100% cotton， the baby does not irritate the skin， soft and thick， comfortable， <br />breathable， moisture wicking and strong， with natural stretch elastic， giving <br />the baby the most gentle care!<br />Children's T-shirt size:<br />80 cm (as 0-6M)   : length 37 shoulder width 21 bust 55 waist 34<br />90 cm (as 6-9m)   : length 39 shoulder width 22 bust 59 waist 38<br />100 cm (as 9-12m) : length 42 shoulder width 23 bust 62 waist 40<br />110 cm (to 12-18m): length 44 shoulder width 24 bust 64 waist 42<br />120 cm (to 18-24m): length 46 Shoulder width 25 Bust 66 Waist 44<br />Due to the different measurement methods may be 2-3 cm error.