320ml and 420ml double wall stainless steel vacuum thermo mug, water sports bottle. BES-82# 320ml / 420ml Product Feature: double wall ... stainless steel vacuum thermal sports water bottle, travel mug. Can keep hot and cold for 10 hours ... vacuum flasks, thermos, travel pots, coffee pots, food jugs, water bottles, mugs for 12 years, with 800 workers.Warmly welcome ...