Stylish butterfly knot style design mug cover.
Seal on mugs, glasses or cups to help keep beverages at a constant room temperature. Simply press the cup cover slightly to enable airtight sealing.
Dimensions: 11cm x 3cm.
Temperature: -40F to 500F(-40 ℃~ +260 ℃).
- Keep your drink hygienic and clean.
- Atmospheric pressure concept design prevents water leakage when tilted.
- Washable and light weight.