With its one-button locking system uniquely designed lid and intuitive pressure regulating controls the Calphalon 6 Qt. Stainless Steel Pressure Cooker is exceptionally easy to use. It's great for weeknight cooking because it can reduce cooking times by 50% or more which means your pot roast shorts ribs rice or chili will be done in record time. The easy-to-use cover has a unique locking rim that secures the cover to the base in any position - there's no need to thread or align the cover to get it on right - and it locks with just the touch of a button. The spring-loaded pressure indicator pin pops up when full pressure is reached so you can monitor cooking times and the pressure release dial allows you to select a high or low pressure setting for cooking or safely release steam after you're finished.