Why choose Mermaid?
Most 40oz tumblers use a press-on lid with an open straw hole. That's why they leak the second they tip in a tote bag or a car door. We built the Flo Tumbler with a screw-on lid, a magnetic seal, and a silicone gasket around the straw, so 40 ounces stays where you put it. Same capacity everyone else offers. None of the cleanup.
40oz Venture Bottle Lid
Lost your lid or just want a fresh one? We’ve got you covered — literally. This replacement lid is made to perfectly fit your 40oz Venture Bottle, keeping your drinks leak-resistant and adventure-ready.
Designed with a built-in straw, flip-up spout, and a secure seal, it’s easy to sip on the go whether you’re hiking, commuting, or powering through your workday. Just twist it on, flip it up, and you’re good to go. Straw is included.
Features:
- Fits the 40oz Venture Bottle
- Leak-resistant flip straw design
- Easy-carry handle built into the lid
- BPA-free and durable construction
- Dishwasher safe (top rack)
40oz Venture Bottle Lid

Not Just A Tumbler.
It's the last one you'll buy.
Sealed Shut, Not Just Covered
Screw-on lid, magnetic seal, silicone gasket, flip-up straw cover. Throw it in your bag sideways and forget about it.
24 Hours Cold. 12 Hours Hot.
Double-wall vacuum insulation. Ice you pour at 7am is still ice tomorrow morning, and the outside never sweats.
Fits Your Hand. Fits Your Cupholder.
Tapered base drops into any standard cupholder. Ergonomic handle, easy on the wrist, and it works right or left handed.
14 Designs, Released in Limited Runs.
Celestial. Twilight Garden. Daydream Daisies. New drops all year, so yours doesn't get mixed up with everyone else's at the gym.
Try It Risk-Free.
Free shipping over $55. 30-day returns. Backed by our Lifetime Warranty.
Loved by thousands - Order YourS Today




