It's hard to find affordable 100% cotton work pants!!  I was delighted to find these on Amazon for a very reasonable price.
My husband is an Electrical Lineworker and is required to wear 100% natural material clothing (ie: cottons, silks) due to synthetic fibers burning easier and melting to skin.  He's been wearing jeans, but they just done offer enough movement for him to climb the poles comfortably.  He also complains that the jeans don't breathe well...
He's loved the one pair of Dickies that we first purchased so much that we ordered more.  They breathe so much better and this particular style offers plenty of room in the seat and thighs for maximum movement.
The material is thinner than jeans, but I wouldn't say it's as thin as typical Dickies.  The pants washed well - there seems to be a very small ammount of shrinkage in the inseam, maybe an inch at the most, but none around the waist.  Perfect.  I washed in cold, and dried on Medium.
We'll definitely be purchasing more of these!  Great find!