Synapse 19 or Synapse 25 Optional Internal Frame

We present for your use these optional, removable internal frames with aluminum stays for the Synapse 19 and Synapse 25 backpacks. They’re designed to work with any generation of Synapse 19 or Synapse 25 that has rail loops. The frames are made of die-cut .055” thick High Density Polyethylene (HDPE), with a nylon webbing sleeve sewn down the center that encases a 1” / 25mm wide 6061 aluminum stay that’s pre-bent to a generic spinal curve. Learn more: https://www.tombihn.com/products/syna...