Come and see our amazing products. The tumblers has double walled and vacuum insulated.Lid has an attached rubber seal thickened seal ring make it spill-proof, leak proof and seal. make it excellent in heat preservation. The liquid in the cup will not easy to leak out.Tumbler is crafted from 304 food-grade stainless steel.Ensure your cups remain rust-free. All components are non-toxic, BPA free.This travel mug perfects for use at the office, travel, hiking, home, road trip, working, and more.It also can be put on the cup holder of most cars. FDA certification passed.Share the happiness that the stainless steel coffee cup brings to you.It is also a perfect gift for a Birthday, Christmas, Valentine's, Mother's or Father's Day.Accept customization. Pls confirm further with us if any query about packing info, inventory status and time schedule.