Multi-functional Spill-proof Insulated Fixed Cup Holder(Black)

1. Material: ABS plastic
2. Bottom adhesive fixing, can be installed on any object surface, making the cup more stable
3. Adjustable inner diameter of the cup holder, suitable for different sizes of mugs
4. Water and moisture resistant design with built-in 5mm waterproof bit
5. Prevents water droplets from wetting books and documents and damaging wooden desktops
6. Prevents water cups from tipping over
7. Size: 11.3 x 5.3 cm
8. Weight: about 100g