• Straw lids are dust-proof, sealed & splash-proof, especially suitable for outdoor activities • When you need to leave your drink for a while, these products can protect your drink well & keep them clean • Wide match: silicone straw covers are heat resistant, can withstand the temperature from -40 - 480 degree Fahrenheit (-40 - 230 Degree Celsius) • Suitable for straws with a diameter between 7 mm & 8 mm, fit your straw cup, stainless steel straws, etc. • These straw tips covers are perfect for decorating your straw cup. Anti-dust & splash proof, especially for outdoor activity ☆ *All prices on my listings are negotiable to some extent*