Tea Infuser Bottle, Double Wall Glass Travel Mug, Heat Resistant Tea Tumbler, Loose Leaf Tea Strainer Cup, Glass Water Tea Tumbler for Homes, Offices, Schools, Champagne Gold, 16.9 oz

Works for a diffuser. I used it with coffee but the filter is holes are too large. You can add a micro filter and would work fine. Only complaint is the silver looking part of the bottle is glued to the actual cap. If you put it in the dish washer it will loosen and will spin freely. This sometimes made it a pain when trying to open the jar from there. I would just twist the top jar.