The Simms G4 BOA Boot has a highly developed RiverTread platform. For the G4 Boa boot Simms designed the boots to minimize unbending materials in an effort to form to the terrain by establishing more rubber to make contact with the river/stream bottom, thus allowing the fly-fisherman to better feel the change in the bedrock. As a result, you will be better able to maintain balance and control with much less effort. In addition, Vibram Idrogrip outsoles provide great grip across slick underwater obstacles via multi-directional lugs - compatible with all Simms AlumiBite and HardBite cleats and studs. Inside the boot is an environment hardwired for warmth and comfort, featuring a lined neoprene finish, cushioned where you need it most and ultra-smooth for easy on/off performance. If you're looking for a great, durable wading boot, then the answer is the Simms G4 Boa Boot.
Gary Hammerslag's initial inspiration for the company was the creation of laces for footwear that would stay tied and not come undone during physical activity. In 2001 the first boot-systems featuring the Boa laces were produced by Vans and K2's snowboard divisions. In 2002 DC implemented the laces into its boot-systems for snowboard boots as well. By 2004 the company moved into the cycling industry, and next into the golf industry in 2005. The lace closure systems were also integrated into other products, including trail running shoes and more general outdoor footwear. This included winter boots, hiking boots, hunting boots, and work boots. Boa has also been used by endorsed athletes in both the Olympic Games and the X-Games. In 2011 Simms Boa Technology changed the name of its patented closure system from the "Simms Boa Lacing System" to the "Simms Boa Closure System", in reaction to the use of Boa Technology on non-footwear items such as helmets, motorcycle gloves, hydration packs, medical braces, and other apparel. By 2012 Boa Technology was used in one third of all the snowboard boots produced globally, and more than 70 riders in the Tour de France used the Boa Closure System.