Material: Silicone Size: 10mm / 390.00" Colors: Silvery, Yellow, Pink, White, Blue, Black 1. Unique Design: This cool and stylish straw cap features a double pentagram design, unique and fashionable, making drinking water a trendy statement. 2. Safe Material: The straw cap is made of high-quality silicone, safe and healthy for you to use with peace of mind. 3. Leak-proof Design: The straw cap has a sealed design to effectively prevent liquid from spilling out, making it convenient to carry around. 4. Convenient to Carry: The lightweight and convenient straw cap can be used anytime, anywhere, perfect for decorating your water bottle in various occasions like travel, work, and sports. 5. Multi-functional Use: With a diameter of 10mm, this cool pentagram straw cap is suitable for various cups with straws, allowing you to decorate your favorite water bottle in a more personalized and stylish way. Package Includes: 1/6*Straw Cap