MINIMAL CONSTRUCTION M:Project was reengineered from the ground up. Thinner leather or mesh allow for a thin but strong upper thinner midsole, and the lowest profile spikes available. ULTRA THIN & STRONG SKIN The specially designed ultra thin and ultra strong M:Spec leather becomes a second skin.SPECIALLY DESIGNED LASTM:Project's specially designed last allows toes more room to deliver more real-time feedback. Won these at a golf event a while back. Worn only twice.