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Massive Customs

MC Slim - The Original Massive Customs 4-Shot Slim Fridge Case for Zepbound® & Mounjaro® Injection Pens

MC Slim - The Original Massive Customs 4-Shot Slim Fridge Case for Zepbound® & Mounjaro® Injection Pens

Regular price $29.99 USD
Regular price $34.49 USD Sale price $29.99 USD
Sale Sold out
Shipping calculated at checkout.
  • White
  • Black
  • Gray
  • PlumNew!
  • LavenderNew!
  • Marine BlueNew!
  • Red
  • Maroon
  • Pink
  • Orange
  • Caramel
  • Yellow
  • Green
  • OD Green
  • Turquoise
  • Blue
  • Sky Blue
  • Purple
  • Rainbow
  • Dual Yellow - Cyan
  • Dual Black - Blue Sold Out
  • Dual Green - Purple
  • Dual Red - Yellow
  • Dual Orange - Red
  • Twizzler - Dual Pink / Maroon
  • Fruit Loops - Multi Color
  • Two Tone Gray
Quantity

Your pens came in a box built to survive a delivery truck, not to live on your fridge shelf for the next twelve months. It's bulky, it announces exactly what you're storing to anyone who opens the door, and it takes up far more room than four pens have any right to. The MC Slim 4-pen fridge case holds a one-month supply of Zepbound, Mounjaro, or Trulicity single-dose auto-injector pens in a slim, discreet case with a real fit, as opposed to flimsy cardboard. No branding on the outside, no "this is medication" across the front. Just a clean, solid case in the color you pick.

"This is much nicer than storing the shots in the box. Sturdy and takes up way less room in my fridge. Great product!"

Tina, verified buyer ★★★★★

The short version

4 pens

A one-month supply

49mm

Wide. 152mm long x 159mm tall

24 colors

Solids, Rainbow, and duals, in Stripes, Hearts, or Dots

Fits: Zepbound, Mounjaro, and Trulicity single-dose auto-injector pens. Does not fit: KwikPens or Wegovy pens. For those, see the MC Kwik for Zepbound KwikPen, the MC Kwik for Ozempic, or the MC Slim for Wegovy.

Why this beats the original box

  • A real fit. Our exclusive 3D-scanned saddle system was built from an actual scan of the pen, so every pen seats precisely. No rattling, no shifting, no guessing.
  • Self-guiding. Internal funnel geometry steers each pen into place, even when you're half asleep at 7am.
  • Discreet. No labels, no logos, nothing on the outside that tells your houseguests what's inside.
  • Built to last. Rigid plant-based bioplastic with a curved ribbed exterior for strength and grip. Cardboard has never once been described that way.
  • Stays put. A rubber grip base keeps it steady on the shelf, and the snap-fit lid closes firmly once the pens are seated.
  • Slim footprint. Dramatically slimmer than the factory packaging, so it fits neatly in the fridge without taking over a shelf.
  • Made here. Designed, printed, and shipped from Michigan. Custom colors available on request.

Who it's for

Anyone keeping a month of single-dose pens in the fridge who would rather not stare at a pharmacy box every time they grab the milk. This is a fridge storage case. It is not insulated and isn't designed for extended travel or carry-on use. If you need something more travel-friendly, check out the MC Cannon or the MC Solo.

Quick answers

Will it fit my pen?

If you use Zepbound, Mounjaro, or Trulicity single-dose auto-injector pens, yes. KwikPens and Wegovy pens need their own cases (linked above). Not sure which pen you have? Shop all cases here, or message us and we'll sort it out before you order.

The lid won't close. Now what?

Pens should slide down and settle into the saddles on their own. If the lid won't snap shut, check that each pen is fully seated before pressing. Don't force it.

Can I travel with it?

It's built for the fridge, not insulated, and not a cooler. For trips, the MC Cannon or MC Solo is the better pick.

How do I clean it?

Hand wash with cool water and mild dish soap. It's not dishwasher safe, and it shouldn't be left in a hot car or direct sunlight.

Storage case only. Medication not included. Always follow your healthcare provider's instructions and the manufacturer's storage guidelines for your medication. Zepbound, Mounjaro, and Trulicity are trademarks of Eli Lilly and Company; Ozempic and Wegovy are trademarks of Novo Nordisk. Massive Customs is not affiliated with or endorsed by these companies.

View full details
  • 5 stars: 200 (96%)
  • 4 stars: 5 (2%)
  • 3 stars: 3 (1%)
  • 2 stars: 0 (0%)
  • 1 star: 1 (0%)
J
John W.

A GREAT product. The pens fit perfectly,fits very well in the refridgerator takes up minimal space. Delivery was prompt and arrived earlier than expected VERY satisified, would definetly recommend to others.
Well Done!

K
Katie

I love the color and it takes up less space than the box it comes in! Good for the side shelf in the fridge.

C
Charles G.

Keeps my Mounjaro pens organized and out of the way in a small container. I love it. Bought two. One for me, and one for my wife.

m
mundisue

I ordered the “rainbow” and what I got does not look at all like the colors shown in the photo - or really like a rainbow at all. I’d say muted, multi-colored with random stripes is a more accurate description. Guess I should have chosen a solid color. The Mounjaro pens do fit well and for something that sits in my fridge I guess it is better than the cardboard box the pens come in.

T
Thomas S.

What a space saver in my fridge. The quality is good and my order shipped right away.
Very happy with my purchase.

J
Joshua S.

Love it is a huge help for traveling with my glp-1 pens.

K
Kathleen V.

Beautiful case and fits my pens nicely. So glad I got it. It keeps them tucked away and the pretty purple color is outstanding.

A
Anonymous

Perfect fit and LOVE the color!!

T
Tanya B.

Fits the bill perfectly. Pens fit very easily and the case saves space in the fridge. Thank you!

A
Anonymous

Loving it easy for storage and accessibility

B
Barbara S.

Keeps them neat and safe in fridge.

N
Nancy B.

So far so good, my pens fit and that is what I wanted.

J
Jolaine S.

I love the feeling of it and the color. Working great so far.

G
Georgianna

Love it

R
Richard

Excellent…

W
WILLIAM K.

We love the idea of not having to put the bulky cardboard in our fridge. The only critique i would give is that they are very hard to get open. wish the tolerance was just a touch more so the covers would come off easier.

A
Allen

This is great. Exactly as advertised and hold my mounjaro perfectly.

S
Susan T.

These are excellent cases, just as described. The shipping time surprised me as it arrived so quickly. Absolutely recommend to all as these are great products and certainly a convenience.

P
Paul q.

Great quality, pens fit perfectly and fast shipping.

A
Anonymous

It’s great to be able to open the fridge and not see boxes of medication. The size is perfect and we really like the colors.

E
Eliazer M.

Very practical and protects my injections better than what they come in

Y
Yvonne B.

I no longer have to worry about spilling something in the fridge that may affect my Mounjaro. Thank you, thank you, thank you

D
Deborah S.

This case is awesome. Love how it opens up space in my fridge.

A
Anonymous

Works well and now no boxes on the fridge

C
Colleen

The colors on this are gorgeous!! Ordered the larger slim shot case but wanted an additional one the held just 1 month at a time. I would highly recommend this company & its products.

G
Gregory M.

Works perfect. Well built and looks good in the fridge

D
Doug J.

Fits my Mounjaro pens!

K
KTR

It's a good case and fits the pens well. It was taller than I would have expected. I would prefer if it was the same size or smaller than the original box that the pens come in. This is considerably taller and I'm not sure what the extra space is for. Perhaps to fit a wider selection of pens but I'd rather have one that is only as big as it absolutely has to be.

S
Sergio M.

Very nice and very well built

J
Jonathan c.

Outstanding craftsmanship keeps my pen needles nice and neat great for when I travel. Thank you for doing an outstanding job.