This surveyor vest is made with cotton duck material that is resistant to tearing and keeps you warm, dry, and comfortable even in the harshest weather conditionsMade of highly durable 10 oz. (350 GSM) cotton duck materialExclusive StarTech® reflective tape provides maximum visibility and added safetyFeatures 10 storage pockets for added versatilityIncludes radiophone pocket and 2 radiophone clip straps2 large backpack pockets provide additional storage optionsComes with long ruler slot pocket and D-ring slot access on backBuilt to last heavy duty style snaps