Size - The dimensions of the memo wristband are 238x46mm/9.37"x1.8" (length * width). It can be adjusted to fit most people's wrists. The width is sufficient for recording most information. Black pen: 143x10mm/5.6x0.4" (length * width), Eraser: 37x18x8mm/1.46"x0.7"x0.3 (length * width * height). Material: The reusable slap bracelet is made of wear-resistant silicone, which is soft, comfortable, and waterproof. There is no need to remove it when washing your hands or sweating. It has a writable coating that can be easily erased with a regular eraser and can be reused. Features - The waterproof memo wristband records to-do lists, shopping lists, etc., and supports time management and task processing in daily life. It can be firmly fixed on the wrist with a light tap, constantly reminding you. The back has metric and English scales and can be used as a ruler. Uses - The sports memo band is for various groups, including sports enthusiasts, the elderly, forgetful people, engineers, office workers, and housewives. It is widely used in offices, outdoors, homes, etc. Thank you for viewing ⭐️ Instant purchase is OK ♪♪♪ If you have any questions, please ask before purchasing ☺️ Also, please read the profile for other information ✨ There are many other products ♡ We will give you a discount for bundling ♡ #saya'sProducts ☜☜ 33-33 1569