PACKAGE QUANTITY --- One pack includes 6 pieces of silicone cup lids. Cup is not included. PRODUCT MATERIAL --- Made of high-quality food-grade soft silicone, BPA free, reusable, environmentally friendly, and dishwasher safe. Withstands temperatures from -40°C (-40°F) to 230°C (446°F). Helps keep beverages warm or cold for longer. PRODUCT DIMENSION --- Inner diameter: 3.22 inches (8.2 cm), Outer diameter: 3.78 inches (9.6 cm). Designed to fit coffee mugs or cups with an outer diameter between 3.46 inches and 3.62 inches (8.8 cm - 9.2 cm). REMINDER --- Works best with mugs that have a handle positioned in the middle or lower part. Flexible and adaptable for a range of cup sizes. Please measure your mug before purchasing. If your mug's outer diameter is smaller than 3.54 inches (9 cm), the lid may fit but will not create a secure seal. Not intended for drinking directly through the lid. FUNCTIONAL CUP COVER --- Suitable for use at home, in the office, during camping, or for outdoor activities. Portable silicone mug lid and drink cover designed for convenience and reuse.