Fabric mantle covers both top and bottom of 1-, 2-, or 3-neck flasks

Temperature range is Ambient +10° to 450°C. The circumferential zipper holds the halves snugly together to prevent heat loss, and the side split in the top section allows for easy flask removal. Each half has a detachable 122cm (4') cord and interlocking connector. 230V, CE-approved versions are available.