Cotton Blend,Soft velvet surface,provide a level of comfort, no need to pull away the seat belt from body while driving.Our foam lining, which is soft, is suitable for adults women and children, and it can provide better cushioning when emergency brakes or accidents occur, and it is able to protect the shoulders of your family and you from harm.Seat belt pads can be used for car,trunk,jeep,SUV,airplane, can also be used on your handbag, baby diaper bag, golf bag, luggage which with a strap, and place else you want padded comfortNo extra tools required. Just wrap them around the seat belt strap, once you cinch your belt, then you can just slide it to the position that fits you the best.The excellent material selection ensures that the belt pads protect your chest, collarbone and neck during emergency braking or even accidents. Protect yourself and your loved ones!