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.

Utility Straps with Buckle Quick-Release Adjustable Nylon Straps

Hiking backpack 32L - NH Escape 500

OneBag - The Art of Minimalist Travel

This hiking bag is comfortable with its padded pads, practical with its 3 compartments and 15 pockets and smart thanks to its cabin size and clever

Hiking backpack 32L - NH Escape 500

Hiking backpack 32L - NH Escape 500 - Decathlon

Quechua NH Escape 500 Review

Utility Straps with Buckle Quick-Release Adjustable Nylon Straps

Hiking backpack 32L - NH Escape 500 - Decathlon

Premium utility strap with quick-release buckle made by top nylon material,they are wear-resistant,UV-resistant,heavy duty and won't curl.,black pom

Premium Utility Straps with Quick Release Buckle Adjustable Short Nylon Tie Down Straps for Backpack Lashings Camping Gear Sleeping Bag Mattress

New Quechua NH ESCAPE 500 lightweight hiking backpack

Quechua NH Escape 500 Review

Carrying Strap with Handle, Adjustable Nylon Belt for Moving Boxes

Ayaport Utility Straps with Buckle 48 Quick-Release

Hiking backpack 32L - NH Escape 500 - Decathlon