Kryptonite KryptoLok 610 S Folding Lock

The rubber coating on the links means no scratches on my frame, which was my main worry with a folding lock. It folds down small enough to tuck in my frame bag, and the 5mm steel feels solid for quick stops around town.

Wasn't sure a folding lock would feel sturdy enough for my ebike, but the 5mm steel links have held up fine locked to racks around town. It folds down small enough to toss in my frame bag, which is way easier than lugging a U-lock around.

The rubber coating hasn’t scratched my frame once, and those 5 mm steel links feel seriously tough. It folds down small enough to stash in the frame bag, which is exactly what I needed for my eBike.