Meet the MBC 24: Your Mason Jar Tumbler Questions Answered

Your Favorite Drink, a Little More You

What is the MBC 24? Does the lid come with the jar? Will it fit in my cupholder? If you're new here, welcome! You've come to the right place for a little mason jar know-how.

Our mason jar drinking lid idea began in the summer of 2011 in Sonora, California. Since then, helping you turn an everyday jar into a reusable drinking cup has been at the heart of MBC. There's something about a mason jar that brings together nostalgia, personality, and everyday usefulness. Add your favorite lid and straw, and it becomes your kind of to-go cup!

Pictured: the MBC 24 with our Aspen Green Lid and yellow 9-inch glass straw. Photos show styling inspiration; check the current listing for available options and what's included.

What Does “MBC 24” Mean?

The 24 refers to our 24oz mason jar tumbler. As a business owner, it's easy to forget that not everyone knows your shorthand! Some of you have been with us since the beginning, and some of you are meeting MBC for the first time. Either way, I'm happy you're here.

I still get excited seeing our jars become part of your daily routines. All the ideas, work, and little details mean even more when I see you enjoying them.

What's Included in a Tumbler Set?

A mason jar tumbler brings four pieces together: the jar, a drinking lid, a matching jar band, and a reusable straw. The exact combination depends on the set you choose.

Before ordering, check the current listing for the jar size, lid style, straw material and length, band, and any optional upgrades. Cozies, cuffs, and other accessories are included only when the listing specifically says so. Colors and available combinations can change, so the product page is your guide.

Explore our current Tumbler Sets. Prefer a bamboo lid? Browse the Bamboo collection for current options.

Why Drink from a Mason Jar?

There are thousands of drinking cups out there, but a mason jar is still my favorite. I love being able to see my drink, switch up the colors, and reach for the same jar again and again.

You don't have to change your whole routine at once. Choosing a reusable cup you genuinely enjoy is a simple place to start. For me, that can be an iced coffee in the afternoon or a jar of water beside me while I work.

One of my favorite little details? Choosing a lid color to match my outfit or my drink. It's a small thing, but it makes an everyday moment more fun!

Your MBC 24 Questions, Answered

Will it fit in my cupholder?

That convenient shape is one of the reasons we love the 24oz jar for everyday sipping. Cupholders vary, though, so compare the dimensions on your chosen listing with your cupholder before ordering. A cuff or cozy can also change the fit.

How do the lid and band work together?

The drinking lid sits on the jar opening, and the matching threaded band holds it in place. Start with a clean jar, remove the flat canning lid if there is one, place your MBC drinking lid on top, secure it with the band, and add your straw. Easy peasy!

The band and lid need to match the jar's mouth size. Our 24oz setup uses a wide-mouth lid and band. Regular-mouth and wide-mouth pieces aren't interchangeable, so check your jar before choosing accessories.

Is it spill-proof?

A secure band holds the lid in place, but a drinking lid with an open straw hole is not a sealed, spill-proof closure. Keep your tumbler upright rather than tossing a filled jar into a bag.

Can I use an MBC lid on a jar I already own?

Our plastic MBC drinking lids come in regular-mouth and wide-mouth sizes for standard mason jars. Match the lid and band to your jar's opening. Don't assume that a pasta jar or another reused container will fit just because it looks similar.

What about the band?

The band is a small piece with an important job: holding the lid on your jar. You can keep the look simple or choose a different band to make the combination feel more like you. Check the listing for material, size, finish, and care instructions.

Doesn't a cold glass jar get condensation?

Yes, a cold drink can leave moisture on the outside of the glass. A cozy is a lovely way to help manage those drips and make your jar more comfortable to hold. We have fabric and CableKnit options in different sizes and styles. Check each cozy's fit details before choosing one for your jar.

Is everything dishwasher safe?

Care depends on the pieces you choose. Don't assume the same washing instructions apply to the jar, plastic lid, bamboo lid, band, straw, and cozy. Follow each item's current care instructions, especially when combining different materials in one set.

Can I use the tumbler jar for canning?

Our tumbler jars are sold for drinking, not as tested canning equipment. Don't use them for canning. Follow the jar manufacturer's guidance for temperature limits and use, and avoid sudden temperature changes.

Make It Your Everyday Favorite

Start with the jar and build a combination you love. A different lid, a favorite straw, or a cozy can give the same everyday drink a whole new personality.

Find Your Band

Explore our Bands collection and check the mouth size before ordering.

Pick Your Straw

Browse reusable straws and choose the material and length that suit your jar.

Explore Bamboo

Visit our Bamboo collection for current lid and accessory options. Check the listing for fit, contents, and care.

Add a Cuff or Cozy

Explore Cuffs & Cozies to find your finishing touch. Cuffs and cozies have different fit requirements, so use the sizing details on the individual listing.

I hope that helps you get to know the MBC 24 a little better! Whether you've been here since 2011 or you're choosing your first set, thank you for being part of our small-business story.

For MBC news, new favorites, and everyday inspiration, use the newsletter signup below.

Cheers!
April