Do these Cement Laces fit both the AJ4 and the AJ1, or just one?

The lace shape and width works across AJ4 and AJ1 builds. Length varies by colourway and shoe size: the AJ4 uses a shorter lace run than the AJ1 High. Check the per-product length spec on each card before ordering to confirm the right length for your specific pair.

What is the difference between Cement Laces and standard flat laces for Jordans?

Cement Laces use a rope-textured flat weave that mimics the original Jordan 4 White Cement lace construction, not a smooth flat ribbon. The texture adds grip at the knot so laces stay tied longer than smooth nylon replacements, which matters on court or during heavy daily use.

Can I use Bred Cement Laces on a Jordan 4 that is not a Bred colourway?

Yes, and it is a common styling move. Bred laces on a Thunder or Military Blue AJ4 add a pop of red that reads as intentional contrast. Grey Black works as a tonal swap on any dark colourway. These are accessory laces, not strictly colourway-matched replacements.