Large Food Grade Bags for Proofing

I put a warm wet towel in the bottom, place the tins or basket of bread dough in and place the lid over. Works great as I can see the loaves proofing and can carry it out of the way to another room, if I wish. I used to use a large bag on the counter but found it could be awkward to move if I needed the counter while it was proofing.

well too :)

Turkey sized oven roasting bags have been doing the job for the last three years [same bags!]. They're made of clear mylar [nylon film] are food grade and can be reused for a very long time.

On occasion I've used Costco poly meat bags on a one-shot basis.

Wild-Yeast

Reynold's Turkey bags from wal- mart

This is a source of large bags, unfortunately they only come in rolls of 200 , at $25.00

http://www.webstaurantstore.com

I buy Guittard chocolate products in 25-lb bags through a co-op and have used those once I package my chips into smaller containers.  Recently in Smart & Final (like a small, non-membership Costco with food and cleaning supplies) stumbled on Covermate Stretch-to-fit Food Covers Convenient Reclosable Bags in the aisle with bread bags and foil .  They're basically clear shower caps of various sizes, and work great for covering dough bowls, bread pans, bannetons, etc.  For round or rectangle containers 4" - 19".  Reusable, food safe, microwavable  They have a firm elastic band and stay poofed up 4-5 inches above the top of the container.  Have left dough in the fridge for 2-3 days; no explosions due to gas buildup.  Creates nice humidity, no skin on the dough.  Think I paid about $6 for the variety size bag of 11.  They're also on amazon and other sites.  Much better than plastic wrap or plastic lids.