10mm Straw Cover: This straw cover is specifically designed for stanley cup straw. perfectly compatible with stanley 30&40 oz tumbler with handle straws, And our straw caps are also suitable for all types of straws with an outer diameter of 10mm.
High Quality Material: Made of food grade silicone, these stanley straw covers cap are durable, safe and non-toxic, reusable, hand washable and dishwasher safe.
Protect Your Drinks: The straw cover can seal your straw, so that it can prevent dust when not drinking, or prevent drinks from spilling during moving, a good helper for outdoor activities. Note: Straws are not included, please wash before first use