I bought this just to replace my original, which, after six years, shattered when I was running the blender. I guess it just gave out. The new lid design is great! It really stays put. There is no leakage and it seems like it stays cleaner during use than the old one did. For example, with the old lid, when I ground coffee, the inside would be covered in coffee grounds. Now, it's pretty clean and I can just rinse it off.