Pearl Izumi Men's Tri Fly Elite v6 Cycling-Footwear Synthetic/ Textile Imported Synthetic sole Shaft measures approximately low-top from arch Spring/Summer 2017 1:1 Anatomic Tri Closure eliminates hot spots and removes pressure from your forefoot, Unibody construction eliminates traditional lasting board to deliver low 5mm stack height for pedaling efficiency Advanced 3-Layer Seamless Composite Upper offers breathability and eliminates hot spots by adapting to your foot shape, 1:1 Integrated Carbon Power Plate delivers feather-light stiffness Dual density EVA insole provides excellent longitudinal and transverse arch support, Oversized heel pull offers easy on/off performance during critical transition times, Replaceable heel bumper SPD-SL Compatible