The classic model SLEEP ING SHIRT T. The silhouette is inspired by an oversized grandpa shirt , with double-welted pockets at the waist, and the design allows you to wear the shirt by itself for a quick outing . The material is a typewriter cotton ripstop woven at a high density using 100% organic cotton. It is characterized by its moderate tension and strength . It is kneaded by liquid flow bleaching , giving it the original cotton flavor , fluffiness , and washed-out feel. It is post-dyed with a botanical hybrid.