Premium 40oz Spill-Proof Mug Cover – Ultimate Protection & Style

High-grade silicone lid designed for 40oz tumblers, ensuring 100% leak-proof performance during active use. Features precision-engineered grooves for airtight sealing, preventing spills in cars, gym bags, or outdoor adventures.

Reinforced food-grade silicone resists deformation and odors, maintaining integrity through extreme temperatures (-40°F to 450°F). Laser-cut sip holes optimize drinking flow while blocking debris.

Universal fit for most 3.5"-4" diameter tumblers. Ideal for travel, commuting, or sports. Sold in bulk—wholesale pricing for resellers and retailers. Custom branding available.