These chaps are made from a smooth chocolate brown leather.  They were only used for one season.  There are tons of shirts that are listed that go with these...check them out!

There is also neoprene sewn into the side of the zipper to allow for stretch and better movement of the leg. 

Measurements:  Thigh 22 3/4", Waist 32-37 ", Inseam (crotch to floor) 34.5", Outseam 48" (Waist down)