The Guardian 2 in the Strong Guy Fit from Naked and Famous. 

Details
Guardian 2 is an Ultra-durable, heavy duty 14.25oz Japanese Selvedge denim woven with 20% Kevlar fibers. Famous for being five times stronger than steel by weight, the Kevlar gives the fabric exceptional tear resistance and a distinct synthetic yellow selvedge ID.

• STYLE / FIT— Strong Guy
• 14.25oz Japanese selvedge fabric
• 100% Cotton
• COIN POCKET— Exposed
• Zip Fly
• 20% Kevlar fibers
• Made in Canada