"So I have been wearing these like crazy in the ColoRADo warm winter long enough to get them a proper break in - and I have been very pleased. I am a chiropractor by trade, and LOVE what I do. But I also need to have shoes that won't slip when I adjust humans. These shoes have not let me down. The difference is the GRIP-TECH out-sole of all the Rhea gear. They have this crazy micro-tread pattern that grips and rips whatever you are walking on."