Comparisons
5×5 vs 4×4 Closure: Is the Extra Lace Worth It?
A 5×5 closure provides a somewhat larger lace area than a 4×4 closure, but that difference only matters if you use the additional parting space.
4×4 closure
A smaller closure area can be enough for focused parting and a relatively simple lace footprint.
5×5 closure
The added width and depth can provide more room for part placement while retaining a closure-style construction.
What matters beyond size
Compare lace material, cap fit, hairline design, density and the exact shape of the lace—not only the two headline measurements.
Choose by routine
If you repeatedly wear the same part, a smaller closure may cover the need. If you want more flexibility, the larger area may justify itself.