100% combed cotton 1 X 1 rib tee. 240 grams per square meter. Lap shoulder construction for over-the-head ease. Dyed-to-match 1 x 1 rib finishing at neck with 1/16 white piping on all colorways. Snap bottom closure for improved diaper comfort. Sizes available: 3-6 months, 6-12 months, 12-18 months, 18-24 months.