They runs slightly small but they have some elastic built into the band to help with the fit.  I wear between a 34-35 inch waist and I got the 36 inch waist and it sits fine without stretching the elastic at all.  I bought them long so I could tuck them into my boots during tick season and I normally wear a 32 inch length and I bought the 34 inch length and it was perfect to give me a little extra. The pants do not have any blousing straps at the bottom, the description doesn't advertise any but pants like these often have them and for full disclosure I though it was worth mentioning. The material doesn't feel like normal ACU or multicam bottoms, it feels much more synthetic.  The feel doesn't bother me, it isn't rough or uncomfortable but I though it was worth mentioning.  I bought the olive green color and they came a little more green than olive but they'll work well for my purposes.  I'll probably buy another pair in the coyote brown color.
If you would like to know something specific about this item just ask and I'll try to respond within a day or so.