These are older Vivo Barefoot boots, from when they had a wider last than they do now, but please check the pics for measurements. The model was called "boxer boots". The laces and zippers allow for adjustability and are great for medium to high volume feet (which is not often the case with modern vivo Barefoot shoes, sadly). I've had these in my attic for many years. They had been worn prior to that, but are still in good shape and have a lot of life left.