leaking from the bottom
The mug sprang a leak after just a month of regular use and started leaking from the bottom
Oversized Mug, 22 oz, Black
$11.99
Glazed stoneware in black, fired hard enough to shrug off a daily wash.
Holds 22 oz to the brim, sold singly, made for tea, coffee.
Capacity: 22 oz
In the range · Oversized Mugs
Kiln finished
Lead-free glaze
Dishwasher safe
No two alike
Piece information
| What | This piece |
|---|---|
| Capacity | 22 oz |
| In the box | 1 piece |
| Colour | Black |
| Body | Glazed stoneware |
| Handle | Large handle |
| Dishwasher | Safe |
| Microwave | Safe |
| Glaze materials | Lead-free, cadmium-free |
| Reference | BM-STW4 |
What the glaze does
We mix this glaze to sit still in the heat, so the finish stays even across the piece and from one piece to the next.
Care
- 1. Warm it firstRinse a cold piece in warm water before you pour something boiling into it.
- 2. Cloth betweenStack with a cloth in the gap. Glaze is glass, and glass scratches glass.
- 3. Cloth, not wireWarm water and a cloth take off everything a mug picks up in a week.
When stacking glass or ceramic items for storage, place a cushion of soft material between each piece.
the Canadian Conservation Institute
Read 14 August 2026. More on the care and safety page.
What buyers wrote
8 reviews for this line and its variations, quoted word for word, lowest rating first.
love it
love it, large enough for a morning mini bucket of coffee, broke my last one, got the same exact one, fits well, works well
It keeps my coffee hot and is strong and durable
This mug is perfect size. It is very durable and heavy. This is not some cheap mug, but a beautiful heavy strong mug that can will keep your hot drink hot. The handle is perfect size for me so I don't have to worry about dropping it.
Perfect mug!
This mug is the perfect size for my tea, not too large, but not too small. It keeps my tea hot and I love the colors. This is my second mug in this color, and I plan to keep it at my office so I have one at home and one at the office. I don't usually buy mugs in the same color, but this mug is the exception. I also have it in the grey, white and the mint (which is also very pretty and am using it now).
Nice Cup
You would think, a cup with this capacity would look more like a Stein, but it doesn’t. Pleasing shape and texture/feel.My favorite cup.
Oversized is just right
Really like the weight/feel of the mug and the handle. No mug keeps the coffee as hot as I'd like it, but this one does a nice job of retaining the heat for a good while. I am quite pleased.
Perfect? Maybe so...
I have been using this mug, and this mug only, for almost a year. I love the size, the heft, and the capacity. It gets microwaved most days, and I rarely wash it! I am ordering another just for the truck!
Perfect for tea.
Perfect for a big cup of tea or a hot chocolate. I use mine for tea. My tea stays hot while the outside and handle is a manageable temperature. I think I'm going to buy more in the other colors.
More Bosmarlin oversized mugs
What you are holding
The same eight things are true of every piece we make.
Fired hard
Stoneware fires dense, so it holds heat and shrugs off the knock against a tap.
Glaze that moves
Mineral oxides travel in the heat, so the firing draws the line between colours.
Handles for full mugs
A large mug carries a handle you can put a whole hand through.
Made to stack
Wide feet and even rims, so a shelf of them sits flat.
Dishwasher and microwave
Stated on nearly every piece in the range, and true of the glaze rather than a hope.
No two alike
Speckles land differently and a fade can sit higher or lower on the next piece.
Lead-free and cadmium-free
As stated on the range. The care page spells out what that means.
Sized for real drinks
From 8.5 oz for a cappuccino to 50 oz for a mug of soup.
Stoneware, porcelain and earthenware
Three words used loosely on the same shelf. They describe how hot the clay was fired and how much water it will still absorb, and that difference decides how a piece behaves in a dishwasher, in a microwave and against the edge of a sink.
Stoneware, what we make
- Fired hot and dense, so it absorbs almost no water
- Heavy in the hand and stable on a desk
- Chips are rare, and a chip does not soak up coffee
- Holds heat noticeably longer than a thin cup
Porcelain
- Fired hot too, but thrown thin and light
- Elegant, and far easier to chip on a tap
- Cools faster because there is less body to hold heat
- Usually sold as a full service rather than by the piece
Earthenware
- Fired lower, so the body stays porous
- Depends entirely on its glaze to hold liquid
- A crazed or chipped glaze lets the body absorb
- Lighter and cheaper, and shorter lived in daily use
The three words describe firing temperature and how much water the fired body still takes up. Everything else follows from that.