View of Hot Shot Frame structural components
Our Hotshot Frame is designed specifically for the diverse and difficult operations Hotshot crews are tasked with. The framing in these packs--the Hot3 and HotTop--is a combination of three components: our patented Hotshot Yoke, M4 Waistbelt system, and a sheet of .06 HDPE in the main bag. Together, this system provides the load carrying capacity and mobility the fire environment demands, able to haul upwards of 50lbs.
The Hotshot Yoke is our Fire-specific harnessing system that utilizes our patented Futura technology. Futura is a Velcro-anchored, telescoping yoke system, fully adjustable to the wearer's torso length. The Hotshot Yoke is 5" wide--two inches narrower than our standard Futura Yoke--and designed to maximize ventilation in the hot, dry, fire environment. Once the yoke is properly adjusted, the curve of the composite framesheet matches the contour of your back. The yoke is available in three different stock sizes, offers a precise, micro-adjustable custom fit, and is extraordinarily easy to readjust in the field.
Our M4 Lumbar Wrap is a light and agile five-segment waistbelt system that effectively transfers medium sized loads through the wearer's hips and core. Internally, it contains two rigid plastic wings that are canted to the shape of your hips. These wings connect to the pack's mainframe through a sandwich of Velcro and plastic. This system works on multiple levels: when the pack belt is pulled tight, the wings cinch to your hips, which draws the pack-bag into the lumbar region and wraps around your back, engaging the frame for excellent weight distribution. This system reduces the kelp bed of tension straps and user error associated with the typical backpack tensioning systems in the industry. The M4 waist belts are built with 3/4” Matrix open cell foam. This provides breathability and the ideal amount of cushion for low-slung fire packs. These pads are enclosed in a spandura fabric wrap that gives a specific flex pattern, allowing both lateral stretch and vertical support. As with all Mystery Ranch belt systems, the pads are sized for the individual, and can be changed at any time.