Enhanced Durability:these caps are built to last, ensuring yourbottle stays dirt free and secure. Flavor Preservation: Perfect for using your bottle without flavor cartridges. Each cap seals tightly, preserving the purity and taste of your water Easy to Use: Simply screw these caps onto your bottle for a reliable seal that prevents dust and dirt, making it perfect for kids and adults alike. Versatile: Whether you're refilling with coffee flavors or standard water, these caps your drink is secure and ready to go. Colour:White Material:Silicon Package Contents: 2x Cap Lid Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.