- QuickviewHatsPurnaa's Baseball Cap is made from 100% GOTS certified organic cotton. It's available in one-size in blue or black. 22" circumference Cleaning & Washing: Machine wash cold with similar colours. Hang dry or tumble dry on cool. Please use an environmentally friendly detergent, free from optical whiteners and phosphates, in order to minimize negative environmental impact. Price is based on an order of 144 or more.