Sip in Style & Keep It Clean! Give your favorite tumbler a fun, functional upgrade with our Custom Round Silicone Straw Covers, designed to perfectly fit Stanley Cups and most reusable straws (6–8mm). Each topper provides a snug, secure fit to keep your straw in place — no slipping, no mess, just smooth sipping wherever you go. Crafted from durable, flexible, high-quality silicone, these covers are built for everyday use. They’re easy to clean, long-lasting, and a great way to protect your straw from dust and spills — perfect for home, the office, or travel. Add a splash of personality to your drinkware with our bright, cheerful colors. These Round Straw Covers come in a variety of colors - Black, Blue, White, Navy Blue, Red, Gray and Orange.