●Shoe Width: 3E ●Material: Polyurethane ●Sole Material: TPU/Nylon ●Heel Type: Flat ●Material: Nylon, rubber (sole) PU leather (upper) The upper is made of a synthetic high density PU material with multiple air vents that allow moisture to evaporate easily and ensure breathability ●[Secured on the Top] The swivel buckle laces are solved to dangerous situations that get caught in your bike, and the swivel buckle can be adjusted to the appropriate tightness ●[Fixed Sole] The sole is made of fiberglass reinforced nylon sole that is abrasion resistant and has a high conical shape on the heel. Ergonomically locks the foot in the ideal position to increase foot comfort, increase stability and increase the efficiency of your upstroke