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Leak-proof & Dust: prevents the straw from being contaminated by dust and spittle in the air, and also prevents mosquitoes from entering the water cup, keeps the straw and cup hygienic.
Address the issue of incompatibility: When buying a straw cover, do you worry about its fit for various brands of straws or cups? The adjustable straw cap can provide a solution. This represents a significant advancement.
Fit All Brand of Straw: Patent Design - Innovative design with adjustable internal diameter (6mm-10mm). Suitable for all brand of Stanley, Simple Modern, Yeti, Owala, Hydro Flask, Reduce, Maars, Meoky, MaxBase, Beast, Hydrapeak and so on. NO brand limitid.
Food Grade Material: Made of the same food grade silicone material. BPA free, durable, safe and non-toxic, reusable. Dustproof and splashproof, especially suitable for outdoor activities. Hand washable and dishwasher safe.