The Wolf Thermal Flask is a sleek double-walled stainless steel flask, suited to day trips and short sessions when carrying a full brew kit isn't practical. It keeps hot drinks at temperature for around 24 hours and cold drinks fresh for up to 3 days. - 750ml capacity - Double-walled stainless steel construction - Keeps drinks hot for up to 24 hours - Keeps cold drinks fresh for up to 3 days