Review on ☕️ Fanatek Camera Lens Coffee Mug: A Blend of Style and Photography Enthusiasm by Mark Ponnusamy

Warning: This lens-like, clear lid does NOT have a pressure relief vent like other drinking lids (or even take-out plastic cup lids). So if you put hot coffee in and close the lid it will eventually leak due to steam/pressure build up, or worse, if you unscrew the lid to drink it will "burst" and squirt hot coffee everywhere (those two things happened to me at work). Otherwise, only store cold drinks in it or do not use the lid for hot drinks. The previous one I bought had a flip up hydration lid for the hydration side and a vent to relieve pressure. I suggest you look for this model instead.