Is your backpack buckle just one bad day away from total collapse? Don’t wait for disaster to strike mid-hike. Print this repair buckle now and stash it in your survivor kit! Because nothing says “prepared” like fixing your gear on the fly while everyone else is losing their minds (and their backpacks). Be the hero your backpack never knew it needed—before it’s too late.

With this buckle, you don’t need to re-sew the strap or pretend you know how to use a needle. Just grab a single M3 screw and attach it to the sewn strap side. Voilà! crisis averted, and no bloodshed (unless you count the screw slipping, but that’s on you).

For those who love details:

Use an M3 x 25 screw for a 20mm strap buckle.

Use an M3 x 30 screw for a 25mm strap buckle.

Use an M3 x 35 screw for a 30mm strap buckle.

One side has a larger hole so you can heroically shove the screw right in; then, drive it into the tight opposite hole. Go wild and screw it straight into the plastic, or channel your inner engineer and use a longer screw with a nut. Whatever helps you sleep at night.

Pack this buckle, save your backpack, and remember—fortune favors the prepared (and those who bring spare screws). Good luck out there, MacGyver!

Update 09/08/2025: Added a 30mm version (use an M3 x 35 screw)