outside nylon-- inside polyester These cozy hand-warmers attach to any bar or handles, keeping your hands toasty while making it easy to tend to your child's needs Universally adapts to any stroller handles or crossbar and hook and loop fasteners for quick installation roomy cuffs for hands and jacket sleeves This is an excellent product for cold winters and freezing fingers, it's perfect tough These polar gloves is convenient warm and look pretty cool With these you take your hands out whenever you need to no fuss it's warm and amazingly