Silicone Boot Sleeve for Bottle Protection

This silicone cup sleeve fits 2.95-inch diameter tumblers, crafted from FDA-approved food-grade silicone (50±5 Shore A hardness). It features a snug-fitting design that tightly conforms to your tumbler, preventing slippage and providing secure impact protection. The collapsible design allows for compact storage when not in use, making it ideal for travel and daily commuting.