Solve the problem of unsuitability: When purchasing a straw cover, are you concerned about the size not being suitable for multiple different brands of straws or cups. The adjustable straw cap can help you solve it. This is a great innovation.
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.
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.
Guaranteen:If, for any reason, we will issue you a full refund or an exchange!