I hate to only make these three stars because I absolutely love them. But... They run just slightly large. I wear a 30/30 in everything and these are just a bit loose. Its not extreme. Pants won't fall off if I don't wear a belt but a belt is required for them to fit right. I wouldn't be complaining about this if other sizes were readily available. I looked on Levi's web site and it shows that they make smaller sizes for these and some of the other blue jean 541s. Good luck finding any. I searched dozens of retailers and most of them don't even list anything smaller than a 30/30. I contacted Levi and they said that they do make them and to keep watching their website for availability. Its been six months now and I have yet to see anything available. So,  with these running a little large and being flexible at the same time it really is necessary to have a size or two smaller. I have always been a fan of Levi jeans and was ecstatic when I found some that fit an active lifestyle. Jeans you can do anything in. But in my opinion it is a massive failure and a lack of R&D/QA to leave this product as is without making sure that the other sizes that you advertise as manufacturing are available to the consumer.  I really hope Levi steps up and fixes this problem because I will order a dozen of these the moment they do.