Simms G4 Pro wading boot is the most technically advanced boot that Simms has ever made. The upper has a highly abrasion resistant textile mesh on the upper with a vacuum moulded TPU welded along the sidewall for added durability. The 3D rubber moulded toes cap provides excellent toe protection for when you’re walking down steep hills or accidentally kicking rocks, along with a 3D moulded TPU heel clip to really keep your ankle in place. The lacing comes together with high strength eyelets and speed hooks on the upper to lock your heel into position for a comfortable day on the river. Neoprene and closed cell foam liners on the ankle keep things plush with minimal water absorption. The sole of this boot is what takes it to another level. First up is the dual density midsole construction. This is comprised of a softer density material in the middle for comfort with a higher density compound on the sides for stability and durability. The brand new Vibram IdroGrip outsole has unique stainless steel embedded cleat receptacles for the Simms G4 Alumbite & Hardbite cleats to screw into and lock in for good, or until you want to switch them out for new ones. The new G4 Pro boots are absolutely best in class, check them out now.