500ML Stainless Steel Vacuum Flask Gift Set Office Business Style Thermos Bottle Outdoor Hot Water Thermal Insulation Couple Cup Descriptions: Name: Stainless steel vacuum bottle Category: Vacuum flask Capacity: 500ML Size: 24x6.5CM Color: Black; grey; pink; green; blue Material: Inner 304 Stainless steel; Outer 201 stainless steel Feature: Heat preservation for 6-12 hoursApplicable scene：Sports,wedding,business,home,festival,travel,business trip,office,school,gift giving