Jerry Hsu's second Emerica pro model shoe is built using STI Fusion Technology, in which the outsole, midsole, and upper are fused together to create an unbreakable bond with a vulcanized look that's lighter, more comfortable, flexible and durable. The shoe also features a mid-top design for added ankle protection, a thin padded tongue and collar for ankle comfort, an optional hidden lace flap for lace protection, a triple-stitched toe cap for durability, and an STI PU Foam Lite level 3 footbed for even more comfort. Features: Designed by Jerry Hsu. Suede, perforated suede, and canvas upper materials. Mid-top for added ankle protection. Thin padded tongue and collar. Optional hidden lace flap. Triple-stitched toe cap. STI Foam. STI PU Foam Lite level 3 footbed. STI Fusion Technology.