Bests & Worsts Reviews from Amazon

I ordered a large - being I wear a 12 and the size chart says 10.5-13 to order a large. The fit didn't seem right as my heel cleats were almost off the heel towards the toe leaving the backside of the heel without a cleat. When I went tot the company link on the packaging I found it stated they may run on the small side and to order the next biggest size and that too big was better than too small - not on the Amazon site. I did like the concept and thought I'd give the larger size a try, I was glad I didn't try to wear them outside. But when I went to return the product I learned it was a not returnable item - again a fact that wasn't anywhere in sight during the purchasing process.