This truly is the best and most useful set of mixing bowls I have ever owned. I have a set of three Pyrex bowls, but they are so heavy, they hurt my hand just picking them up. These are light weight, but very sturdy and the rubber bottoms and hand grips really keep the bowls from slipping on the counter or in my hand. Also, the three sizes are the perfect size for all my mixing needs. I highly recommend them. 

Pros: Heavy duty, rubber bottoms and hand grips, comfortable to hold and use, colors are great. I love these bowls. 
Cons: No cons.