I agree with the above statement. This pack has plenty of main compartment storage room but lacks smaller pockets for tool organization. The bladder is huge though (which is awesome) and the straw has an on/off valve (super crazy awesome).
Measured around the knee. Got sized for Large and they fit perfect. I ride XC and don't even feel them after rides of over 20 miles. They do get hot, duh, but they've saved my knees from some good thrashings.
Also- I bought these for under $50 here at H&R. Now they are $70. At that price point I would have gone with the POC's or the Fox's instead.
I've got 16" guns. the L/XL were HUGE on me. Was good for the price.