These bathrobes are certified organic which means they are manufactured apart from other materials which may contain chemicals. They are available in 100% certified organic cotton and 50% organic cotton/50% organic bamboo. The organic cotton is a plush terry robe available in natural and navy. The bamboo/cotton is a lighter, softer robe with a terry lining, available in natural only. They are unisex and run S/M and L/XL. The S/M fits up to a women's size 14. These are generous robes meant to wrap you after a bath, dry, comfort, and keep you warm.