Vacuum Flask 1) Capacity: 350, 500, 750, 1,000ml 2) Material: 18/0 or 18/8 stainless steel (as clients' request) Vacuum Flask1) Capacity: 350, 500, 750, 1,000ml 2) 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, streamlined to fit ...