double wall plastic insulated coffee mug: 1,PP plastic inside 2,can insulate liquids 3,leakproof guarante 4,new shape design our double wall plastic insulated coffee mug: double wall plastic insulated coffee mug:basic details: *capacity:450ml *pcacking:48pcs/ctn *meas:54*48*39cm *n.w./g.w.:8/10kgs *material:food grade PPProduct function:· Eco-Friendly,FDA test , SGS , 100% BPA free,LEAD free;· ...