Material type 304 Stainless Steel No of pieces 1 Capacity 300 ml Insulation type Double wall Temperature retention Yes No sweat Exterior Keeps liquid hotcold upto 6 hrs hot 12 hrs cold Leak proof Yes Wide Mouth for easy cleaning Inner and Outer side of mug is made from 304 Grade Steel which is Rust Free and 100 Food Grade Lid comes with safety lock BPA free material lid with Edible PP material Perfect size fits right in your car bottle holders Best Usage Can be Used for Outdoor Sports Gym Work Trip Travel OfficeSchoolCollegeGymPicnicHome