1. Cute starfish shape design that glows in the dark, providing practical comfort at night and creating a pleasant atmosphere in your home or office. 2. Made of high-quality silicone and eco-friendly rubber, it is soft and helps protect walls from scratches or stains caused by door knob impact. Offers anti-slip and shockproof performance, reducing noise when opening or closing doors. 3. Diameter: 5 cm (1.97 inches); Thickness: 1 cm (0.39 inches). Package includes: 4 door knob bumpers in 4 different colors (pink, blue, white, purple). 4. Equipped with 3M adhesive sticker on the back for strong and durable attachment. Easy to install—simply peel off the adhesive liner and stick to a clean, flat surface. Removable without damaging the wall surface. 5. Suitable for use in various locations, including living room, bathroom, kitchen, bedroom, washing machine, toilet, and kitchen cabinets.