The 18oz STAINLESS STEEL COLD DOME from Thermos® uses double-wall vacuum insulation technology to maintain temperature wherever your day takes you. Keeps drinks cold for up to 13 hours. BPA-free construction. Backed by the Thermos® warranty.

Specifications: 18oz capacity | Double-wall vacuum insulated | BPA-free Stainless Steel | Keeps drinks cold 13 hours | Dishwasher safe — top rack only

Double-wall vacuum insulation keeps drinks cold 13 hours by eliminating heat transfer between the environment and the contents. The near-vacuum between the two stainless steel walls means no conduction, no convection — just consistent temperature from fill to finish. BPA-free 18/8 stainless steel.

Shop all Thermos® drinkware, view best sellers, or add laser engraving.

Frequently asked questions

Is the 18oz Stainless Steel Cold Dome BPA-free?
Yes — BPA-free construction throughout, backed by the Thermos® warranty.

Is free shipping available?
Yes — free shipping on all thermos.com orders over $50, shipping within the contiguous U.S.

What is the Thermos® warranty?
Thermos® products are backed by the Thermos® warranty. Contact us for warranty inquiries and all other feedback.