• Pixel-art Voidcask, the Vacuum-Flask Guardian, on a black mug with the slogan "INSULATED BY NOTHING. LITERALLY."

IndexCatalogueMug

Voidcask, the Vacuum-Flask Guardian Mug

$21.99 USD
$21.99 USD
İndirim Tükendi
Size

A vacuum flask suppresses conduction and convection with a vacuum gap; silvering reduces radiation.

The joke: Vacuum as the ultimate insulator. The slogan on the mug reads INSULATED BY NOTHING. LITERALLY.

Source: J. Dewar, "The vacuum-jacketed vessel", Proc. Roy. Inst. Gt. Brit. 14, 1–14 (vol. 1893–95); flask made 1892, first shown at the Royal Institution 25 Dec 1892.

Shipping calculated at checkout by destinationMade to order, ships in ~10 days

Details

Size & material11oz · 15oz

Black glossy ceramic mug with a C-handle. Lead- and BPA-free.

  • 11oz: 0.33 l
  • 15oz: 0.44 l
CareDishwasher & microwave safe

Dishwasher safe (top rack) or hand wash. Microwave safe.

ShippingBy destination

Shipping calculated at checkout by destination.

Made to order: about 10 days of production and handling before it ships.

Delivery times & where we ship

Returns & replacements21 days

Every item is printed to order, so we can’t accept returns or exchanges for change of mind, or if you ordered the wrong size or colour.

Print defect, misprint, damage or the wrong item? We’ll send a free replacement, or a refund if you prefer. Report it within 21 days of delivery with a photo; no need to send it back.

Full refund & replacement policy

Field notes

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