I bought several sizes and plan to buy more. They are light weight yet sturdy. I was concerned at first they felt too light but they are perfect when filled with batters and other dense foods making them so easy to work with. I love to cook a lot but at my age glass mixing bowls just became too heavy for me to work with. I wanted mixing bowls like the Chefs use in videos so I read recommendations and these bowls were well reviewed. They wash perfectly without spotting and all sizes nest perfectly AND they are inexpensive.