No more digging through your bag looking for your tape measure!! Constructed of HEAVY #4 canvas, has more rivets in them at the stress points than any other bag the market. Bottom is DOUBLE reinforced and the TUNNEL LOOP is TRIPLE sewn at stress points PLUS riveted! Also has a bull pin loop on each side. We have listened to our customers and we have added a tape holder that is rivited and reinforced with a leather backing.