Grey universal silicone sealing bottle stopper — replacement silicone gasket for straw holes Key benefits Prevents leaks and spills: airtight design seals straw holes to stop liquid leakage and accidental overflow. Keeps beverages fresher and at temperature longer: helps retain heat or cold by improving the bottle's seal. Durable and reusable: made from quality silicone that is soft, washable, heatresistant and resistant to deformation. Compact and convenient: slim, lightweight design is easy to install and store without taking up much space. Features and performance Material: quality grey silicone — flexible, heatresistant and longlasting. Compatibility: suitable for most cups, thermos flasks and wine bottles that have straw holes. Please confirm the product size before use. Function: replacement stopper part provides a tight seal around the straw hole to reduce leaks, maintain beverage temperature, and protect contents from contamination. Maintenance: dishwashersafe or handwashable; retains shape and sealing performance after repeated use. How to use Simple installation: align the gasket with the straw hole and press into place until secure. Removal is equally easy for cleaning or replacement. Storage: folds or nests compactly with other small accessories and takes minimal space. Practical applications Daily commute: stop coffee or iced drinks from leaking in bags or backpacks when using a travel mug with a straw hole. Outdoor and travel: secure hydration bottles during hikes, gym sessions or picnics to avoid spills and keep drinks at the desired temperature. Bottle : worn or lost stoppers on thermoses, cups or wine bottles that use a strawaccess gasket. Note Confirm the product size against your cup or bottle's straw hole before ordering to ensure proper fit.