FlexFrame Insert (Small)

FlexFrame Insert: Premium Replacement Frame Sheets for Tom Bihn Backpacks and More

This frame sheet is designed to fit a range of popular backpacks, including Tom Bihn Synapse 19 and Synapse 25, as well as other backpacks with similar internal dimensions. It provides firm structure and support, offering a perfect replacement for the discontinued OEM version.

Transform your favorite backpack with the FlexFrame Insert — the ultimate solution for adding structure and support to Tom Bihn Synapse backpacks and many other similarly sized bags. Available in two sizes:

Small: Perfect for Tom Bihn Synapse 19 and comparable bags

If you’re looking for a replacement Tom Bihn frame sheet, the FlexFrame Insert offers a durable and upgraded alternative. But it’s also compatible with a wide variety of backpacks, ensuring versatility across brands.

Enhanced Design Features:

Optimized dimensions – slightly larger than the original Tom Bihn frame sheets for a better fit and performance

Reinforced rubber binding on the bottom edge for secure, slip-resistant placement

Bonus replacement wings included for extra durability and long-lasting support

✔ Compatibility
 
Small size (41.5cm): Fits Tom Bihn Synapse 19 and similarly sized backpacks

Also fits a variety of backpacks with similar internal panel dimensions