I have bought my boys so many pairs of these trousers and I have been really happy with them. My 7 year old in particular wears his clothes very hard so most trousers I buy will have holes in the knees within a month whereas these Iron-Knee seem to last for ages. The record for one of these pairs is 13 months before a hole appeared. We did have one pair that wore through (below the reinforced patch) in only a couple of weeks but true to their word, Land's End replaced them even though I had bought them months before and were well past their return date. The elasticated waist is perfect as neither of them want to faff about with buttons. I would say that they come up quite large so I tend to buy a size smaller (neither of my boys are tall for their age though).