The unique dual-layered filter and lid that make this project so special, offered without the tumbler. Will work great with your existing tumbler if you like to run things through the dishwasher after use. This specific add-on is offered at clearance level pricing because it was accidentally laser-etched with an outdated design, which lacked fill lines.
Fitment on Other Brands:
The Mastermind Lid and Filter will fit on any 30 oz tumbler from YETI & Ozark Trail. It will fit older models of RTIC Tumblers. It will not fit on RTIC's newest design or BUILT branded tumblers.