Stainless steel vacuum cup 201/304 stainless steel, plastic screw cap 350ml,450ml, 500ml, 600ml, 650ml,750ml,1000ml ... : water,travel,sports gift,promotion 2. Material: Food grades stainless steel,single wall,double wall available ,different kinds of lids available ... . 6.Sample: 3-7 days, delivery :20-30 days. Stainless steel vacuum cup