These cups are plastic but have a good weight and not easily knocked over. The walls are thick and they and fit well in your hand. The two sizes are ideal. However, they crack. I dont own a dish washer so they're hand washed only. It starts soon, havent leaked yet, but is an eyesore and a disappointment.

I really love these cups there are a great addition to usefor our dinners on the patio and I don't have to worryaboutthem getting broken if kids drop them. They are pretty thick plastic so there strong. I love the color and swirl pattren.

These look really nice, and the material seems very sturdy. After just a couple of months of use, cracks began to appear on several of them. And we wash these by hand, not in a dishwasher. Disappointing.

I am so in love with these cups. They are perfect for get togethers. The material is amazing, I love the swirls on the cups. My family has been enjoying them and they are going to be perfect for summer family events. The quality is amazing.

These Member’s Mark 8-piece cup set are a must have for summer!! They come in two different colors white or blue with clear base. They are super durable and look just like glass which I love! 2 different sizes with 4 cups of each!

These are a nice thick plastic but not rough to the touch. My kids kept asking if they were actually glass. The pattern is even prettier in person and I will probably getting more just to have extra on hand.

I love these glasses but the smaller one all leak. they crack down on the sides and leak. I do not have a diswasher and are washed by hand.

Small cracks developed and began leaking

They crack from use, the dishwasher and from no reason. Had several crack in the first few weeks.

It’s a replica of the original design, but far inferior in quality. Shame on those who produce and sell these replicas at Sam’s Club. They should be prepared for legal action over patent infringement.