Bullet Coffee: 8 Reasons Why You Should Start Your Day With This Caddis D28 Readers Gloss Black Eyewear SUPcentre Bulletproof Coffee Recipe: The Original Keto Coffee With Butter & Mct Oil D28 Reading Glasses Bullet Coffee Brown Caddis Caddis. For those fans of substance, this frame will not fold four different ways into a square the size of a Starburst. D28 is a hearty helping of precision cut, 100% acetate with Izquierda and Derecha laser etched across the top in case you forget which side is left and which is right. A premium hard coating protects lenses, increasing durability and minimizing scratches. Lenses include a high performance water, dirt, and grease repellent coating for easy maintenance and superior optics. Premium, bio based acetate frame with 5 barrel industrial hinges.