Reflective sheeting are a special type of sticker. Reflective sheeting do not emit light themselves, but when a light source (such as headlights or a flashlight) shines on them, reflective sheeting can efficiently reflect the light back towards the source. This makes objects equipped with reflective stickers highly visible at night or in low-light conditions, greatly increasing visibility.   

Most reflective sheeting utilize the principle of "retroreflection". This is typically achieved through tiny glass beads or microprism structures distributed within the sticker. When light enters these structures, it is precisely reflected back in the direction it came from.   

The primary function of reflective sheeting is to enhance visibility in nighttime or low-light environments, thereby increasing safety. For example, applying them to bicycles, motorcycles, cars, helmets, strollers, backpacks, or clothing allows drivers and other road users to notice them more easily.   
Reflective sheeting are used for traffic signs, roadblocks, construction vehicles, dangerous area markings, etc., to alert people.   
Some reflective sheeting are also designed with patterns or special shapes, serving a decorative purpose as well.   

Vehicles: Bicycle frames/wheel rims, motorcycle bodies/helmets, car bodies/bumpers, trucks/lorries (often subject to mandatory regulations).   
Personal Items: Helmets, backpacks, shoes, jackets, raincoats, baby strollers, wheelchairs.   
Home/Outdoor: Mailboxes, gateposts, stair edges, garage doors, outdoor equipment.   
Industrial/Engineering: Construction site fences, machinery, safety signs.   
Reflective stickers come in different reflective grades (such as engineering grade, high-intensity grade, diamond grade), which differ in reflective performance and durability. Common materials include PVC, PET, etc.   

Reflective sheeting are available in roll tape form, as well as pre-cut shapes (like arrows, strips, circles, stars, etc.), and can also feature customized patterns.   

Common colors for reflective sheeting include silver-white, yellow, red, blue, green, etc. Different colors may have specific uses according to regulations (for example, yellow/amber is often used on the sides of vehicles, and red on the rear).