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 23 L - NH 500 Yellow - Yellow ochre - Quechua

Quechua NH Escape 500 Review

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

Nylon Tie Down Straps Adjustable with Quick Release Buckle for

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

Hiking backpack 32L - NH Escape 500

Quechua NH Escape 500 32 Review (Budget Travel Backpack)

New Quechua NH ESCAPE 500 lightweight hiking backpack

Hiking backpack 32L - NH Escape 500 QUECHUA