The inner lining of the stroller hand warmer is made of double-sided flannel fabric, which is pleasant and soft to the touch.The stroller gloves fit every standard stroller. You can put your hand in the glove and wrap your wrist so that your wrists and hands are really warm.The outside of the stroller gloves is made of waterproof 1680D double-strand oxford fabric, which is waterproof and not afraid of rain and snow, the fabric is thick and strong, moisture-proof and abrasion-resistant.The black fabric is very dirt-repellent. If you accidentally sprinkle coffee and water on the surface, wipe it off with a paper towel or towel.Your satisfaction is our main priority. If for any reason you are not 100% satisfied please let us know right away. We will give you a refund or a new product.