My husband is on his feet 12 hours a day and he has tried numerous shoe brands over the years. A friend told him about these amazing shoes (purchased elswhere, for about $25.00 more) and the hunt was on! O.S.was my second stop and should have been my first, the price is phenomenal. In fact, within a week I purchased a second pair for my husband, just in case they ever become unavailable. The 10.5 W shoe fits perfectly, no breaking in required, they are light weight, non-rubbing, and did I mention "perfect"?