TR cup with stainless steel main body, compact design, easy to take, safty and durable,best choice for outdoor life stainless steel ... /Mountaineering mug / military mugStainless steel main bodyCompact design and easy to takeThere are mainly many types material for cups in the ... PP from PC, Aluminium is harm to health that leads to senile dementia if eat too much, all above status make stainless steel ...