Two-coloured plastic shell exterior (red-ribbed and off-white smooth) containing glass vacuum bottle, with twist off leak proof stopper, lid, open-handle.

"The injection moulded polypropylene bottle, designed by Julian Rowan in 1960, was one of the first all-plastic vacuum bottles. Still in production, Canadian Thermos has donated two 1997 examples, along with the earliest record of the design: a blueprint with checkerboard/pineapple pattern signed and anotated by Rowan and dated November 29, 1960. An American version of the Canadian design was introduced ca. 1963. Canadian Thermos has also donated examples of earlier 3 metal body encased glass vacuum flasks with plastic mouth, lid, and cup.

Julian Rowan began working with Canadian Thermos in the mid-fifties. In 1959, the company came to him with the determination to create an all plastic casing for the glass vacuum flask. He divided the mould in half, allowing the production to be simpler and more flexible than metal and therefore less expensive to produce. In addition, a two-tone colour scheme could be introduced." [truncated in original PDF]., "...Rowan designed the first Canadian all-plastic vacuum Thermos flask for Canadian Thermos Products in 1962. American Thermos had launched an all-plastic model six moths earlier, but it employed a less sophisticated mould and could only be produced in a single colour. Rowan used polypropylene, a new plastic material, which was more heat resistant and permitted brighter colours. The design featured two symmetrical half moulds in two colours, set the standard for industry and remained in production for over thirty years." (Gottlieb and Golden, 2004, p. 19)