303 pieces of glazed stoneware Lead-free and cadmium-free, as stated on the range The price at checkout is the current one
BosmarlinGlazed stoneware for the table
Reactive Big-Handle Mug, 21 oz, Deep Blue

Reactive Big-Handle Mug, 21 oz, Deep Blue

$21.994.73,937

A reactive glaze over stoneware, in deep 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 21 oz to the brim, sold singly, made for tea, coffee.

Capacity: 21 oz

13 oz17.5 oz18 oz20 oz21 oz21.5 oz

Colour: Deep Blue

In the range · Everyday Mugs

Kiln finished
Lead-free glaze
Dishwasher safe
No two alike
Piece information
WhatThis piece
Capacity21 oz
In the box1 piece
GlazeReactive
ColourDeep Blue
BodyGlazed stoneware
HandleLarge handle
DishwasherSafe
MicrowaveSafe
Glaze materialsLead-free, cadmium-free
Weight1.3 lb
ReferenceBM-NT2F
Every figure here belongs to this piece. Where the maker states no figure, the row stays out instead of carrying an average.
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.

More about how our glazes behave

Care
  1. 1. Warm it firstRinse a cold piece in warm water before you pour something boiling into it.
  2. 2. Cloth betweenStack with a cloth in the gap. Glaze is glass, and glass scratches glass.
  3. 3. Cloth, not wireWarm water and a cloth take off everything a mug picks up in a week.
Care for glazed stoneware, written for the pieces we actually make.

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

7 reviews for this line and its variations, quoted word for word, lowest rating first.

★★★★☆

Look great but somewhat fragile

A really great looking mug and a great size. Comfortable and holds 2 1/4 cups of liquid (description notes 21 oz, but that is to the brim - 18 oz is realistic). Dishwasher safe and microwave safe, however, the color fades a little with regular dishwasher use. We love these mugs, but be warned, they are fragile. Other stoneware we have had over the years could take the odd bump with no problem. These mugs need to be handled carefully. I have broken, or chipped, 3 mugs over the past several months. I bought them all again, as we like the look, feel and size so much. That may not be your preference, however, as at $20 a pop, it is not cheap. We currently have 6 of these and have bought several as gifts. Everyone who visits our kitchen comments positively on these mugs. If your tastes run to cardboard from the local coffee-to-go emporium, more power to you. If you want to inject a little splash into your life and savor your drink, try these.

JT · Reviewed in the United States on June 18, 2021 · bought: Color: Deep Blue · Item Package Quantity: 1
★★★★★

Fabulous cups!

Absolutely LOVE, LOVE these cups! And I'm picky about my coffee mug, it has to be "just so!" Perfect size, love the shape, and really like the lip of the cup - makes it so comfortable to drink - and the pretty design gives me pleasure every morning. Good hefty size but not clunky. I now have of them! And they clean beautifully.

Himmie Mom · Reviewed in the United States on April 9, 2026 · bought: Color: Pastel Blue · Item Package Quantity: 1
★★★★★

great quality cup, very comfortable to sip out of.

Second mug I purchased, so one to share with my guest. Keeps coffee/tea hot a long time, and holds alot, comfortable on the lips to sip with ease, yet very solid, really like that. They are beautiful, like watching clouds in the sky , you see wonderful things in the art work. Was worth every penny.....

Barbara · Reviewed in the United States on February 19, 2026 · bought: Color: Deep Blue · Item Package Quantity: 1
★★★★★

My favorite mug ever

Looks exactly like the picture, it's HUGE and gorgeous 😍

Mello · Reviewed in the United States on June 20, 2026 · bought: Color: Pink · Item Package Quantity: 1
★★★★★

Love these mugs!

I genuinely love these mugs. They are the perfect size for my coffee, fitting just right in my hands and allowing me to enjoy my favorite hot beverages without feeling overwhelmed by a large, unwieldy mug. One of the things I appreciate most is how well they retain heat, keeping my coffee warm for much longer than most other mugs I’ve used in the past. Besides their functionality, these mugs are also really beautiful — they have an elegant design and a nice finish. They quickly became my go-to mugs for mornings and relaxing afternoons. Overall, I’m extremely happy with them and would highly recommend these mugs to anyone looking for a combination of practicality and aesthetic appeal.

Linda Meyer · Reviewed in the United States on June 4, 2025 · bought: Color: Gray · Item Package Quantity: 1
★★★★★

Nice mug

Nice little mug looks exactly like the picture

Emily Nickerson · Reviewed in the United States on July 17, 2026 · bought: Color: Gray · Item Package Quantity: 1
★★★★★

Beautiful cup

This is the great size for coffee lovers. Friends are impressed when I serve them to your coffee in them.

Happy Camper · Reviewed in the United States on June 6, 2026 · bought: Color: Pastel Blue · Item Package Quantity: 1

More Bosmarlin everyday mugs

All 49 Everyday 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.

A Bosmarlin mug in a reactive glaze

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.