Osaka Vacuum Sealed Canister. Stainless Steel Storage Container for Coffee and More. "Tempozan" (40oz) Built in pump makes it easier than ever to store your coffee and food in an air free environment. Stainless Steel canister protects your storage from heat or moisture and the tinted lid keeps the harmful UV rays out. Just pump up and down and twist to lock and seal. To release the seal all you need to do is pull the little yellow tab. Indicator lets you know if you pumped out all the air and if any air leaked in over time. IMPORTANT NOTE: For powdered substances like ground coffee it is best to put in a bag before vacuuming, otherwise the powder gets sucked into the vacuum and causes it to malfunction. Durable and dishwasher safe. Capacity: 1200ml/40oz. For any defects in the materials or craftsmanship of any Osaka product, please contact our customer service team and we will be glad to assist you.