Hiplok Z-Lok Security Tie Lock Single: Black gravel wheels Features Zipp’s ABLC Sawtooth Technology

Features Zipp’s ABLC Sawtooth Technology using a complex dimpling pattern to improve aero efficiency

Transforms from Coolcave pannier cover to hip or cross-body bag

Tire compatibility: from 38 to 76 mm

While that does a great job of summing things up

Hiplok Z-Lok Security Tie Lock Single: Black gravel wheels Features Zipp’s ABLC Sawtooth TechnologyArmored, reusable zip style ties to provide convenient added protection for use on car racks, bikes, accessories, and outdoor equipment. Reinforced steel core Double sided ratchet zip like design Universal release key 400mm length (locking diameter) Weight: 20g (0. 04lbs)