Shop Boys's at RalphLauren.com, the Official Site of Ralph Lauren. Preppy Canvas Short - Made from crisp cotton-blend canvas, this plain-front short is ideal for warm weather. Belt loops. Zip fly with a buttoned closure. Interior adjustable buttoned tabs at the waist ensure a room-to-grow fit. Angled pockets at the front. Buttoned welt pockets at the back. Our signature embroidered pony accents the back right waist. 65% polyester. 35% cotton. Imported.