Filterific: Collection Filter

This is by far the most important app I've added to my site. We're an event organization with multiple road races and runners only want gear from the event they've run. Before this app, searching through the availability of gender specific in-stock sizes from 100's of items from multiple races depressed sales and irritated my customers. Problem solved! And the customer service was FANTASTIC! Very quick and accommodating to my questions/requests during installation and set-up! Highly, highly recommend this app!