Thin fabric and long legs
As others have said the sizing is funky. Get a size larger than you usually do and you will be good in the waist, however the legs will be kind of long (unless your a freak of nature). Thought this would bug me while riding but its been fine.
The fabric is pretty thin (they are not at all warm- should be nice when the temps rise) and I wonder how well they will hold up when I go down.
Not the best for cool/cold weather riding even with layers. Still looking for something a bit more burly.