Double techno 3 push system the double techno 3 push system is inserted on a single base this speeds up wearing and taking off shoes the central mechanism creates a perfect tension balance between the shoes internal and external side the symmetrical mechanism guarantees an excellent closure adapting on every instep an innovative button added to the monofilament buckle if pushed lifts the buckle to facilitate the adjustment soft instep 3 closure system the soft instep closure system is a