Insulated transit bag

An insulated transit-bag for containing a temperature-sensitive article for transport, wherein:

• the transit-bag includes an inner-bag and an outer-bag, made from bubble-wrap;
• the inner-bag is physically attached inside the outer-bag in such manner as to create a between-bags-cavity, the outside of which is defined by the inside of the outer-bag and the inside of which is defined by the outside of the inner-bag;
• the inner-bag and the outer-bag have respective mouths;
• the transit-bag is so structured that the mouth of the inner-bag lies open, and accessible for the placement of the article inside the inner-bag;
• the transit-bag includes an operable bag-sealing-means, which is effective, upon being operated after the article is placed in the inner-bag:
• (a) to leave the inner-bag as a substantially airtight enclosure with the article sealed inside;
• (b) to leave the outer-bag as a substantially airtight enclosure with the inner-bag sealed inside;
• (c) to leave the between-bags-cavity as a substantially airtight enclosure;
• the outer-bag has an outward-facing-surface, and the transit-bag includes an outer-layer of a relatively strong film material, and the outer-layer is secured to the outward-facing-surface of the bubble-wrap from which the outer-bag is made;
• the outer-layer is of such extent as to substantially completely cover the outwards-facing-surface of the outer-bag.