Duck canvas is great as a waterproof lining for bags due to its tight weave. We would recommend not washing the duck canvas as over time it will loose its waterproofing and strength. If you do decide to wash it, the cloth will start to distress. 

Use this fabric for the Merchant & Mills RTR Rucksack pattern. 

Weight: medium-weight
Width: 60"
Price per 1/4 yard: $9.00
Price per yard: $36.00

You can purchase fabric in 1/4 yard increments. The amount available refers to how many quarter yard increments are available.

To choose the amount you want enter whole yardage in first drop down box, partial yardage in second drop down box. Example: If you would like 3.5 yards, enter "3" in first drop down box, and "1/2" in second drop down box.

$9.00