Emerica - Heretic 2 (Black/White/Gum) - Men's: Synthetic, suede or action leather with ventilating mesh. Double-stitched rubber toe cap. Supportive rubber heel cap. Hidden nylon bottom lace loops. Double-padded tongue and interior. Elastic tongue-centering straps. STI Foam(tm) Level 2 footbed cushioning system with integrated heel counter for stability. 400 NBS stitched gum rubber cupsole. Zigzag tread pattern with flex grooves.