Where do you all find your 108 inch backings? I know I had gone to one site where they seemed to be a little cheaper and there was a huge selection but I can't find it in my browser history. I made a larger than usual (for me) quilt and want to have it quilted by a long armer. I'm just having trouble finding an appropriate backing for a 12 year old boy, it's a skateboard quilt. Jenny Doan had a tutorial on it and it's just so neat.
Thanks for any suggestions.

try Marshal Dry Goods

Thank you for sharing, I am always having a hard time finding backings for my quilts. I hope you find the right one you are looking for to put on your quilt.

I have heard good things about Back Side Fabrics:
http://www.backsidefabrics.com/

Fabric.com and Thousands of Bolts both have a good selection of wide backings. However I usually do some piecing on my backs with leftover blocks/fabric from the front so don't always use wide backing fabrics.

Hobby Lobby now carries nice wide backing fabric.

This is a somewhat LQS to me http://oldecityquilts.com. I happened to be in there the other day and overheard a customer talking to an employee about the wide backings. I did not look at them as was not in the market. But I can say this shop does carry very nice quality fabrics. I know they do online sales so might be worth a look.

Connecting Threads has a limited selection of wide backings at a reasonable price and Marshalls Dry Good has a wide variety. Fabric.com also carries 108" wide backing fabric.

I have used both backside fabrics and thousands of bolts and was happy with both

ChristianLane Quilters advertises that they have 108" backings also.