For those with bags without compression straps, a simple hack to compress your bag, just use a belt with buckle. This is decathlon NH500 escape 32L, great bag but no compression straps.

Hiking Backpack 32 L - NH Escape 500 Black - black, Hazelnut

Hiking backpack 32L - NH Escape 500 - Decathlon

Hiking Backpack 23 L - NH 500 Yellow - Yellow ochre - Quechua

Hiking Backpack 32 L - NH Escape 500 Black - black, Hazelnut

NH 500 ESCAPE 32 L Quechua by Decathlon - The best budget EDC

Hiking Backpack 23 L - NH 500 Yellow - Yellow ochre - Quechua

New Quechua NH ESCAPE 500 lightweight hiking backpack

Hiking backpack 32L - NH Escape 500 - Decathlon

For those with bags without compression straps, a simple hack to compress your bag, just use a belt with buckle. This is decathlon NH500 escape 32L, great bag but no compression straps.