Double walled 18-8 stainless steel flask Foam insulated to keep liquids hot Features: sturdy grip handle. BPA free and eco-friendly. (Lid) 1 1/2" diameter. Laser engraving area: (inboard/outboard) 2"x 2", (Lid) 1 1/2" diameter. Black Fill area 1 3/16"x 2". 10 1/2" L x 3 1/2" W