good conditions, shoe laces are dirty as you can see, and some marks due to being used pretty light, comfortable shoes Vivobarefoot Men's Primus Lite III Shoes are lightweight, breathable, wide, and flexible shoes that are great for summer training. They are designed to be foot shaped, with a wide toe box that allows your feet to move naturally. These shoes are also extremely flexible and have a zero-drop, minimalist design that gives the experience of being barefoot while protecting from injury.  Here are some insights from user and expert reviews:  Pros  0-millimeter heel drop Puncture resistant Great fit for most feet Low stack height Robust and long-lasting