Reinforced seams at high tension areas: - Stronger build for longer lasting trousers.Kevlar reinforcement at lower leg: - Resistance to abrasions such as from thorns and brash.Quality YKK zipper system on flies and all pockets: - Zipper system is designed to survive extensive heavy use.Downward facing Pocket Zips.Reinforced lining around ankle: - Reduces wear from boot lace hooks.Cargo and phone pockets have double fold-over flap: - Keeps shavings and dust out.Elasticated boot lace fastener: - Reduces sawdust ingress into boots.