I picked this up as a replacement lid for my 4-quart Watercolor Collection mixing bowl, and it fits exactly as described. The blue swirl pattern lines up nicely with the bowl, so it still looks like a set rather than a mismatched spare. The vent is a small but genuinely useful detail, since it lets steam out when I use the bowl to cover something warm. Plastic feels sturdy enough for everyday mixing and storing. Happy with it, and glad it also fits the 4-quart bowl with the red lid.