vacuum flask, with heat line,it can keep the water warmer to longer time,it's easy to take in car and keep your drink warmer. 550ml stainless steel flask vacuum travel pot: Double wall stainless steel thermos with 1200ml capacity,48 hours insulation to 62 degrees vacuum travel pot :Place of Origin:ZheJiang ChinaModel No:B-034Capacity:1200mlPayment Terms:L/C,T/T Minimum Order Quantity:3000 Piece/ ...