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.
Bento Flex
The Bento Flex is designed to adapt to whatever you’re packing. Made from soft, durable food safe silicone, this bento box features removable inner sections so you can customize the layout or remove them entirely for larger meals.
It’s lightweight, easy to clean, and built for everyday use, whether that’s snacks, lunches, or meal prep at home or on the go. The flexible design makes it practical without feeling bulky, and the smooth, modern look keeps it simple and aesthetic. Pack it your way!
Bento Flex
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
THE MOST STYLISH (AND LEAK PROOF) TUMBLER YOU'LL OWN
FREE SHIPPING
Order two or more tumblers, get free shipping.
LEAKPROOF GUARANTEE
If you don’t absolutely love your Mermaid, send it back no questions asked.
LIMITED EDITION DESIGNS
We're adding new designs all the time, but once they're gone, they're gone!
