Lizzards double-walled vacuum insulated flasks have been designed to be portable, durable and fashionable. They’re made of 18/8 stainless steel – the highest quality steel used for food preparation. This gives the flasks a lifetime of durability and eliminates the need for plastic and glass, making it the ultimate ECO-FRIENDLY flask. The double-wall construction has been designed to keep your cold drinks cold for up to 18 hours or your hot drinks hot for up to 8 hours. Thanks to these thermo-dyn