Excellent quality and being made entirely of borosilicate glass they are much more durable and heat tolerant than Libbys Duratough line that only reinforces the rim. Great deal especially with Wayfair member discount and benefits. Although beautiful the blue is not my favorite color I also own the peach (Infinity) or clear colors and I prefer them in that they display the color and clarity of their contents much better. Bormiolo Rocco Rock Bar style glasses are known for a trompe loeil in that they appear smaller than they actually but their stated capacity is in fact correct. This size looks like a childrens or juice glass. For the screaming deal I got Im not complaining and I use them more frequently than I thought I was going to when I first got them. I highly recommend any of Bormiolo Rocco s Rock Bar or Rock Lounge line of glasses.