Tiger's 12-once stainless steel double wall vacuum insulated travel mug/tumbler will keep your drink hot and cold for over 6 hours.This super light tumbler only weighs 0.2kg, you can easily store inside a bag to carry with you on the go.The push lid with lock system can easily operate with one hand to avoid spillage or leakage.The inside of the tumbler has smooth and polished interior to make it tough against stains and rust.BPA free.