With PopLock, NutKase combined a hard plastic back panel with more pliable rubber edges, a design that is impressively slim for a full-fledged case. The rubber includes protection for the volume and Sleep/Wake buttons, and we noted that it took a bit of extra pressure to trigger the latter button, which may throw some users off until they get used to it. PopLock’s bottom holes present a similar issue: we appreciate the protection that they…