GARRISON Eyeglasses by Blackfin. Color: Midnight Blue, Gray/Blue, Amaranth Red, Army Green, Black/Silver, Size: 56-17-145. Gliding effortlessly between style and comfort, the Blackfin GARRISON reimagines a classic rectangle frame in terms of smoothness and lightness. The air design makes these glasses feel as if they’re barely there. Yet, the impact they make is anything but subtle, with clean lines and a modern silhouette that speaks to understated elegance. The GARRISON eyeglasses are perfect for those who prefer their style to be as effortless as it is impactful.