Nautical, button-up style. Pure organic cotton. Collared design. Subtle stripes In our classic fit for a traditional nightwear feel, this pure-organic-cotton shortie pyjama set is light and airy, ideal for warm summer nights. It’s embroidered with sailboats for a fun, nautical theme, and is yarn-dyed, which gives it a lived-in, faded effect on the striped base.