40 denier is a nice compromise between 30 and 70 denier when you need a strong but lightweight breathable fabric for wind pants or the lightest of backpacking hammocks. Discounts for quantity orders. Good blend in colors. Free shipping
40 denier 60″ wide Olive-Tan (Champagne) with DWR 1.6 oz per square yard
40 denier 58″ wide Tan NO DWR, 1.6 oz per square yard
Cheap as $1.95/yd shipped if you order 18 yards of the untreated.
http://shop.bivysack.com/product.sc?productId=85&categoryId=10
http://blog.owareusa.com/2014/04/15/new-fabrics-1000-denier-cordura-and-40-denier-dwr/
Plus use BPL as coupon code at checkout and get 5% off any fabric order including the 40 denier through April.

