This is a navy blue Vivobarefoot Tracker Decon low. Vivobarefoot sizing is weird so I will try to describe it. It is a size 41, but they fit like a 42. I bought them at this size because I like my hiking shoes to fit snuggly, but they are just a tad too small and constrict my pinky toe. I included a photo for reference with the Tracker Forest ESC in a 42 and an Altra Superior 4 in a 10.5.