I am a flight crew member who travels the world. These shoes have replaced my regular running shoes in my suitcase because they are light weight, require no socks, and are EXTREMELY comfortable after 10-14 hours of flying. In cabin pressure puts a real toll on the body, especially the feet. I have hiked through National Parks, beaches, and many water environments. These dry quickly and I can throw them in the washing machine or hose them down to get off any debris. I hope Keen continues to make this style. Never needs adjusting.