These pants are the best.  They are lightweight and dry easily.  My son wore them for a few days camping, with the legs attached and without.  The legs are easily removable and just as easily reattached.  We are pleased with these and purchased a second pair.  The elastic waist adjustment is fantastic, I have a tall but skinny six year old, which makes finding pants that fit around the waist while being long enough difficult but these did the trick.