Brew your favorite AeroPress recipe right-side-up with the AeroPress flow control cap. Designed to stop water from dripping through your filter mid-brew, the flow control cap ensures maximum extraction and lets you brew any inverted recipe with less chance of spills than with the regular brew cap. The Flow Control Cap fits all AeroPress brewers except for the AeroPress XL, and can be used with both paper and stainless steel filters.