Great mug; comfortable to hold.
This is a fine mug - large, solid, attractive. The 4 stars is because I did not receive the color combination I ordered. Return is too much trouble. Rather than mostly cream-colored, it is blue and black.
Reactive Oversized Mug, 25 oz, Blue
$17.99
A reactive glaze over stoneware, in blue. The kiln finishes the band where the colours meet, so this piece carries the same glaze as the one photographed and a pattern of its own.
Holds 25 oz to the brim, sold singly, made for tea, coffee.
Capacity: 25 oz
In the range · Oversized Mugs
Kiln finished
Lead-free glaze
Dishwasher safe
No two alike
Piece information
| What | This piece |
|---|---|
| Capacity | 25 oz |
| In the box | 1 piece |
| Glaze | Reactive |
| Colour | Blue |
| Body | Glazed stoneware |
| Handle | Large handle |
| Dishwasher | Safe |
| Microwave | Safe |
| Glaze materials | Lead-free, cadmium-free |
| Height | 5.1 in |
| Width | 6 in |
| Weight | 1.7 lb |
| Reference | BM-7IR8 |
What the glaze does
Reactive glaze carries mineral oxides that travel while the piece fires. Thickness, kiln position and the shape underneath all pull the boundary between the colours around, so speckles land differently and a fade can sit higher or lower on the next piece.
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.
Best Coffee Cup
This is my favorite coffee cup! I use it everyday. It's beautiful and holds a large amount of coffee ☕ and I love that it's dishwasher safe!
Very well made mug that holds more coffee than the regular mug! Fits perfect in my hands!
I really love this mug!!! It is a little heavier than most smaller mugs. But it’s so perfect for a good relaxing cup of hot coffee and hot tea!!!
My new favorite
I love this mug! It is a wonderful size, it is very pretty, much better looking than the advertising photo. Most importantly, the handle of the mug is shaped perfectly, the grip is not painful, but very comfortable.
Beautiful
This is a beautiful cup. I love the size and shape. The smaller top helps keep the coffee from cooling too quickly.
Perfect for Tea Drinkers
I've been searching for a large mug for my teas and this is the only one that was perfect! It holds enough tea to make it through a chapter or two and the handle is a bit thinner (which I prefer) and it holds it's heat very well. It is weighty and with the handle being thinner there is a risk there but I still like it. I love the pattern/design on it. It reminds me of something homemade in a good way. This would be a great gift for a tea lover!
We liked it so much we bought it twice
One of the most solid and best cups we've bought. Worth your money :-)
Mugnificent
Bought another sort of plain tan Bosmarlin 25oz mug to use for water (left) and liked it so much I immediately ordered this pretty celadon green one (right). Beautiful glaze, great size, well designed, excellent handle, well made, it's mugnificent and an instant favorite. The handle loop is actually a tad smaller than the original which makes it more comfortable and easier to hold.
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.