Maxell penguin thermo flask are insulated with puf to keep liquid hot and cold for hours. These flasks are unbreakable, hygienic, odour free. Available in various shapes and sizes to suit corporate or home requirements, available in 550 ml. 750 ml and 350 ml. The uniqueness in the product that it has double wall, high quality magnetic, mirror finish, stainless steel super quality finishes with puf to accommodate hot or soft beverages. The product is unbreakable and last for a long duration.