Prism Reflective Technology: These reflective tapes adopt prism reflective technology that has multiple crystallite cubes to increase the brightness of the reflection, which can enhance the vision at night easily. They can ensure your traffic safety at night. Waterproof Sun-Resistant Material : The bike reflective tape is made of PVC material, which is waterproof and wear-resistant, and can be used for a long time. Does not fade when exposed to hot sun or heavy rain, and can reflect clearly in the dark and night. Quantity and Size: You will receive 4 rolls of 4-color reflective tape, you can use them as you want, the length of a single roll is 8m/26ft, and the 4 rolls are 32m/105ft in total, which is enough to meet your daily needs. Easy To Use: The Residue-free reflective stickers is easy to stick on,leave no residue even if used for a longtime, no need to do unnecessary cleaning work after tearing off, it is convenient and easy. Wide Application: This high intensity reflective tape can be used to warn or mark specific locations, such as emergency vehicles, bicycles, wheelchairs, safety fences, boats, clothes, helmets, road markings, traffic facilities, low light areas, etc.