Motorcycle Reflective Safety Tape - Black Sew-On Stealthy Satin Black during the day blends with dark clothing, but turns bright, for visibility and safety at night.This kit contains 48 inches of 1" wide, 48 inches of 2" wide, and 24 inches of 4" wide Black Reflective Fabric. In all, 240 square inches of bright nighttime visibility. Material is a blend of 35% cotton, and 65% polyester. It"s soft, washable, easy manageable in cutting, slitting and sewing. It can easily be cut into strips or pieces, any shape, and sewn to shirts, jeans, jackets, and even leather.This tape is machine washable up to 105ºF (warm) and can be machine dried, however, to maximize its life, we recommend washing on gentle cycle and use of a low temperature dryer setting, or line drying. Be Seen, Be Safe!How This Material Reflects Light Amanet Reflective Tapes and Stickers contain a layer of microscopic lenses coated onto the surface. An auto"s lights hit this and the bright light will shine back to the driver"s eyes, making you visible from a very long distance away. The best way to test this at home is to put the reflective material at approximately 20 feet away, flat against a wall, at eye level, directly in front of the sticker or tape. For testing once installed, put the headlights of an auto at approximately 200 to 300 feet directly behind the bike, on a level road. At just 10 feet away you won"t see the brightest reflection because the angle of the headlight-reflector-eye is too large (See the illustration below). In the real world 10 to 20 feet away is too close for a car to first notice you and stop. The reflective tape or sticker is designed so an auto can see you and your bike hundreds of feet away.