I have purchased several Caterpillar footwear products and all have proven satisfactory and comfortable (one being the most comfortable shoe I have ever worn). On the strength of this history, I purchased these elsewhere as Amazon did not have stock at that time. They are very light and with a sole and heel that should provide excellent grip even on wet, smooth, metallic surfaces. Whilst they appeared comfortable when they arrived, I found on first wear for only a few minutes that both my heels had open, rubbed sores, that since healed. I have again tried wearing them for a similar duration and they had the same adverse result. Unfortunately, the sellers' returns policy will not accept their return once worn.