Unique Double - Rhinestone Design: Crafted from high - quality food - grade silicone, our diamond straw cover features not only a large, shiny resin diamond but also surrounding sparkling rhinestones. It significantly enhances the charm of your Stanley tumbler cup. Fashionable & Colorful Charm: Available in a wide range of vibrant colors like red, pink, blue, green, rose red, purple, yellow, magenta and more, these diamond - flash straw covers act as both functional and decorative items, adding a stylish touch to your Stanley cup and making it stand out. Wide Compatibility with Stanley Tumblers: Perfectly compatible with Stanley Quencher 1.0/ H2.0 FlowState Stainless Steel Vacuum Insulated Tumbler 40oz/ 30oz. The 10mm straw cap fits the size of 8 - 10 mm straws ideally. Ideal Gift Set with 5 Pieces: Coming in a set of 5 diamond straw covers, it’s a perfect gift choice for your relatives and friends. The diverse colors and exquisite design make it a delightful present. Perfect Partner for Tumblers & Easy Storage: This Stanley accessories set is convenient for storage and use, serving as a perfect partner for your tumblers to keep them clean and stylish. 【5 PCS Bling Diamond Straw Covers】Elevate your Stanley tumbler with our dazzling double-rhinestone straw toppers. Made from food-grade silicone, each cover features a large resin diamond and sparkling rhinestones for added glamour. Perfect fit for Stanley 30oz & 40oz cups and 10mm straws. A stylish and practical gift set that keeps your drink clean in chic style.