These criteria helped us considerably narrow the testing pool, so I sent the finalist caps to three additional Wirecutter staffers: someone who describes themselves as having a “larger-than-average noggin” and uses a shower cap more often than not, an occasional shower cap wearer with a self-described average-size head, and a shower cap novice (who also considers their head size to be average). They, along with their partners and children, judged each shower cap on effectiveness, comfort, and durability.
