3 Cup Double-Layer Stainless Steel Vacuum Flask Set

A set comprising one vacuum-insulated stainless-steel flask plus two stainless steel cups (so total “3 cups” meaning the flask + 2 cups) as described on the retailer site. ASH Homes+1

The flask is double-layer (i.e., two walls) with vacuum (or near-vacuum) space between them, providing insulation for hot or cold beverages. pexpo+1

Typically described as “double-layer” though many modern models are double-walled vacuum insulated.

Common capacity (for the set I found) is around 500 ml for the flask.

• Material: Food-grade stainless steel (often 18/8 or similar) for durability, hygiene and safe beverage storage. ASH Homes+1

• Insulation performance: The double-layer vacuum design helps retain temperature — in the listing I saw it says up to ~12 hours for hot or cold