Standard ISO 20345:2014 tested to ISO 20344:2011.  5 sets of D-rings for lacing and 1 set of top speed-hooks.  Padded comfort collar lining, with raised ankle support and
protection to lower cutaway back for less Achilles irritation. Oil, acid, petrol & diesel resistant sole, Sports mesh cushioned lining. Care should always be taken on wet or oily surfaces