2544 Glasses by Lindberg. Color: 10, 20, 25, 30, 35, 60, 70, 75, 77, 80, 85, 90, 95, GT, U12, U13, U16, U9, Size: 51, 53, 55, Bridge: 22, Temple Length: 145, Temple Design: Basic. The 2544 from the LINDBERG Spirit Titanium Collection is a rounder, more playful design, made for expressive personalities who still appreciate clean lines. Crafted in hypoallergenic titanium, it feels gentle on the skin. The slim profile brings lightness in both look and feel. It’s a confident frame that doesn’t try too hard.