I get my bags from a very reputable local bagmaker.  He makes the most durable, consistently-weighted bags that i have come across.  His quality is unsurpassed. These are the only bags that I purchase and recommend. Each bag is made to ACA & ACO regulations and include a 6 month guarantee!

1. 6x6 Duck Canvas Cloth (not just Duck Cloth, there is a difference).
2. Each Bag is filled with Premium Whole Kernel Corn to exactly 16oz (not 14.5 or 15.5) Filling bags to 16oz will increase their longevity.
3. Bags are Double Stitched with 36 weight nylon upholstery thread.