The Perri Sleep Tank is made of a soft, breathable, organic cotton interlock fabric - the same fabric we use in our baby products so you too can sleep like a baby. The Perri Sleep Tank features adjustable straps and a delicate key-hole cutout detail on the front. Size Small. Sherwood forest print is my favorite print from Hill House. It's so cute! About the Print Based off a hand-painted gouache print from the 1900s, Sherwood Forest is filled with all manner of woodland flora and fauna in updated, modern color palettes. Good condition, no flaws.