A replacement frame sheet for Tom Bihn Synapse backpacks and bags like them.
The OEM version was discontinued. This replaces it. It gives the pack back its structure, holds shape under load, and sits flat against the panel. Reliable, and quiet about it.
Two sizes:
Small (41.5 cm): fits the Tom Bihn Synapse 19 and bags with similar panels.
Medium (49 cm): fits the Tom Bihn Synapse 25 and comparable panels.
Rubber binding along the bottom edge keeps it from slipping. A spare set of wings is included.
