The most advanced and innovative wading boot Simms has ever released, the all-new, award-winning G4 Pro Powerlock Boot offers supreme durability and superior grip thanks to state-of-the-art materials working in tandem with the new Powerlock cleat system for on-the-fly traction customization. Built with an upper constructed from waterproof, synthetic Lorenzi scratch leather and highly abrasion-resistant synthetic mesh, the G4 Pro Powerlock Boot offers unmatched durability. A partial neoprene liner provides comfort and easy on/off while laser-cut fabric eye stays allow fine-tune adjustments across the top of the foot and provide reliable durability. For additional comfort and in-stream ankle support, a molded TPU heel counter and a dual-density EVA midsole have been included. Finally, a Vibram® Idrogrip outsole (also available in felt) with a built-in Powerlock system provides optimal traction and cleat retention. All boots come with the Simms ripper tool for installation and removal as well as 14 TPR cleats for use in boats and 14 aluminum cleats for wading applications.