BioChef Vacuum Tumbler Lock in freshness and extend shelf life Designed for use with the BioChef Vacuum Blending Accessory this tumbler is perfect for preserving the colour, flavour and freshness of dry and wet ingredients. Using the BioChef Vacuum Blending Accessory to remove the oxygen from the Vacuum Tumbler will extend the shelf life of your favourite smoothies, juices, sauces, dips and dressings. Perfect for storing your vacuum-blended smoothies, for optimum nutrient retention on the go. Available to purchase individually in 250ml, 400ml and 600ml sizes. For convenience you ...