The Double-Wall Vacuum insulated thermal technology provide a good ability of insulation, which is good for keeping your drinks warm or cold for a long time, hot for 6+ hours and cold for 12+ hours. The cup body features the current fashion skinny design, characterized by slim, lightweight, non-slip and easy to carry, eye-catching and high using intensity, perfect size for the smaller hands!SPECIFICATION:Lid material: AS 20 Ounce CapacityDouble Wall Vacuum18/8 Food Grade Stainless SteelMouth diameter: 2.9", Bottom diameter: 2.5", Height: 8.1"PACKAGE INCLUDED: 1 x 20oz Skinny Tumbler Cup with sliding lid, 1 x Straws cleaning brush, 1 x Stainless steel strawThe coffee tumblers with lid is a trendy colored stainless steel tumblers cup, your best choice in home, office, camping, holiday, sports, travel. It's the best gifts for men women, teenagers, kids, friends, sisters, mom, dad, aunt, coworkers, daughter, son, Teacher on Halloween, Valentine's Day, Mother's Day, Birthday, Father's Day, and Christmas.Warm notice:Please do not use the microwave oven for heating, nor for dishwashers as well.HAND WASH was recommended for longer use.Not suitable for corrosive cleaning agents such as alcoholLid is splash-proof. It may leak, please keep the cup upright when using