- 345gsm, 100% cotton duck weave silicone washed double strength pre-shrunk canvas - Cargo pockets that have provisions for mobile phone, note pad, pencil pockets and tools - Ruler pocket containing extra tool and pencil partition - Reinforcements with Cordura® patches - Cordura® knee pad provisions - Non-spill chest pocket with pencil pocket - All stress points bar-tacked and heavyweight poly cotton pocketing