Double wall stainless steel vacuum flask 1\Capacity: 350ml, 500ml, 750ml, 1,000ml,1200ml 2\Material:double wall SS Features: Vacuum Flask1) Capacity: 350, 500, 750, 1,000ml,1200ml2) Material: 18/0 or 18/8 stainless steel (as clients' request) 3) Double walls stainless steel vacuum insulated for maximum temperature retention hot or cold, can keep warmth for 24 hours 4) Lightweight, unbreakable, ...