I've read other reviews that criticize these pants for being too light weight and not being actual sweat pants.  But that is exactly why I like them.  They are light enough to wear around the house and breath well and keep you cooler while exercising in the summer heat.  They have a fairly wide elastic waist.  I don't care for the draw string which tends to dig in a little (especially since the draw string knot faces inward) but for the price what can you expect.  I also care less for the light and dark grey ones that are not 100% cotton.  Overall fairly durable and a good value for the money.

UPDATE:  I was too optimistic about the fabric.  I still don't mind the light weight material but it is scratchy/itchy and doesn't compare with an earlier version from Russell.  They went cheap and I will never buy from them again.