Simms G4 Pro Powerlock BootThe most advanced wading boot on the water, G4 PRO Powerlock Boot offers supreme durability and superior grip thanks to state of the art materials working in lockstep with the new Powerlock Cleat System for on the fly traction customization. Switch from Aluminum cleats to boat deck friendly Thermal Molded cleats with a flick of the wrist! Boot comes with 2 cleat sets (one aluminum, 1 TPR) for on the fly traction. Waterproof synthetic Lorenzi scratch