What makes it Mighty?
- Non-leaching stainless steel interior
- Double wall insulation keeps drinks hot or cold
- Smooth powder coat finish, sleek modern design
The MiiR classic Tumbler collection fits comfortably in both your cupholder and daily routine. Double-wall vacuum insulation keeps your beverage at the ideal temperature and the stainless steel won’t transfer flavor or leave a metallic aftertaste. The press fit lid is designed to retain temperature longer and prevent splashing.
- Thermo 3D ™ Double Wall Vacuum Insulation Technology
- Doesn't transfer flavor or leave metal aftertaste
- All parts are BPA free
- Press-on lid prevents splashes and keeps drinks warm longer
- Cup holder compatible
Size: 16 oz capacity
Hand washing with hot, soapy water is recommended to keep the cup’s finish in top condition (washing in the dishwasher can deteriorate the finish over time). Lids may be hand washed or are top rack dishwasher safe.
Package free; primarily compostable except very minor components (e.g. plastic toggles or small stickers)

16oz Insulated Tumbler
Color: Slate Blue
18/8 Medical grade stainless steel with Hardshell™ powder coat finish, BPA-free plastic lid.

16oz Insulated Tumbler
Color: Basal
18/8 Medical grade stainless steel with Hardshell™ powder coat finish, BPA-free plastic lid.
About MiiR
MiiR was launched in 2010 and features products created with function and simplicity in mind, and with an end result to further improve lives and build community. Every product we design is built in-house with an emphasis on innovation, timelessness, simplicity and sustainability. We call ourselves a Product to Project™ company, which is our way of saying every purchase of a MiiR product supports a trackable giving project. We accomplish this by giving 3% of revenue to clean water and health projects around the world, and reporting back to our customers GPS coordinates, photos and achieved outcomes for total transparency. The meaning behind MiiR (pronounced “mEEr”) is twofold, both of which emphasize the worthy pursuit of making our world a better place to live, protect and enjoy. The first is a tribute to John Muir, a rugged mountaineer and protector and advocate of America’s treasured lands in the late 1800’s to early 1900’s. Considered the “Father of the National Parks” that we know and love today, Muir penned the beloved quote “the mountains are calling and I must go.” The second borrows from Eastern European languages; “mir” loosely translates to “world” or “peace,” serving as a reminder that each of us plays a role in achieving harmony on a global scale, including social and environmental efforts.
About MightyNest
We make it easy for families to create a healthy home. Each of our 1000+ products has been thoroughly researched to be free of concerning chemicals, and hand-picked for its quality and design. With products for the whole family, ranging from kitchenware to reusable lunch gear to skincare, it is truly better living made easy.
