What's the name of this plastic piece that holds the tightening strap on my backpack? : r/whatisthisthing

Somebody knows what's the use of this strap? Its just in the back of my backpack : r/whatisthisthing

8 Piece Hip/Knee/Back Surgery Recovery Kit Selected by

backpacking - Repair broken plastic buckle in the middle of hiking or alternative way to fix it - The Great Outdoors Stack Exchange

We take a closer look at our new cabin suitcase—here's everything you – Antler Luggage Australia

Strapworks 2 inch Plastic Quick Release Buckles for Straps, 10

What's the purpose of these loops? : r/CampingGear

5 dumb things backpack designers need to stop doing – Snarky Nomad

What are these plastic D shaped rings on my backpacks : r

Plastic Slides Quick Attach Sternum Strap

Soft rubber piece attached to back pack. Can't figure out its use