St Croix Concorde Xtra Front & Hind pattern shoe is HISA (Horseracing Integrity and Safety Authority) compliant for all racing surfaces (Dirt, Turf, Synthetic). The front shoes are designed with a flush toe insert that fits the rounder shape of front feet perfectly. The hind shoes are designed with a symmetrical hind pattern and strong toe clip. The shoe features a wider web for increased support, a strong toe clip, great nail hole placement, prominent sole relief, and beveled heel and branch that require less time grinding and modifying. Recommended nails are 3 race, 3.5 race, and 3.5 XL race.