There are 2 products.
The Snap kit has large sheave pulleys that will allow you to stretch in longline without problem, can be used in highline (with the additional safety system)
The Kolibri kit is 3 times lighter (reeving system) than the Snap kit and above all 5 times more compact the kolibri kit fits in a volume of 1 L against 5 L for the Snap, it will have the advantage of forgetting the pulleys when you step on the strap.
For people over 90 kg who want a more longline oriented use, you can consider our triceratops tensioning system which allows you to stretch even harder.