Mystery Ranch packs are much different from other packs on the market because the shaping for your back comes from additional framing components that are housed in the harnessing, we call this system the Futura Yoke. The Futura Yoke is a Velcro anchored telescoping shoulder pad system that can be adjusted up or down to fit your torso length. It’s comprised of both open and closed cell foam to create a padded and structured piece to give you ideal contact over your shoulders and across your chest. Once the yoke is properly adjusted, the curve of the composite frame sheet is contoured to match the shape of your back. The yoke is available in three different sizes to offer a seamless fit.