14 oz Double-Walled Vacuum Insulated Stainless Steel Cup

What it is. A drinking cup, not a coffee, sold by Mamre Blue Coffee as an accessory to its range. It holds 14 oz and is built with double walls separated by a vacuum layer, a construction used to slow heat transfer between the drink and the outside of the cup.

Materials and construction.

• Body: 18/8 food-grade stainless steel
• Exterior: powder-coat finish
• Walls: double-walled, vacuum insulated
• Lid: described as eco-friendly and BPA-free, with a gasket seal and a sliding cover
• Handle: ergonomic design, described as comfortable for large or small hands

Stated performance. The seller describes the cup as keeping coffee hot until the last sip, and the sliding-cover lid as keeping coffee hot for a few hours. The gasket seal is described as giving the lid maximum spill-proof capability. No test data or temperature figures are published, so these statements are recorded as the seller's descriptions.

Colors. Black and Blue.

Availability. Both colors were listed as out of stock when this entry was written; check availability on mamrebluecoffee.com.

Terminology. 18/8 refers to the approximate chromium and nickel content of the steel, 18% and 8% respectively, a composition commonly used for food and drink contact.