Features:

• Breathable and durable NYCO Ripstop fabric.
• Double layer seat /knee areas for durability
• Two way access side pocket with top mounted pen tubes.
• A simple velcro strap system in built into the waist to allow for size adjustments
• CORDURA Fabric® pocket corner reinforcements to prevent knife clip wear

Tech info:

It’s constructed of heavy Duty, 

durable and breathable ripstop fabric with 15 different sizes gear pockets provides enough storage pockets.
All seams: nylon thread
Metal button and YKK zippers.
Knee area can be put in knee pads
As expected there are also good sized cargo pockets,Hand pockets/Small gear pocket/ Back pockets
If looking for a durable pair of pants that are very feature rich, these Pants are certainly worth looking into.