Classic browline design, expanded for a larger fit.
The Knox RX-XL carries forward the timeless character of the Knox, with wider and taller lenses designed for that perfect fit. Its hybrid RELIALITE® and stainless steel construction delivers durable, lightweight performance, while the structured browline silhouette exudes confident and versatile style, perfect for prescription glasses that move with your life.

Built for all-day wear, the Knox RX-XL features adjustable nose arms, rubber temple tips to ensure lasting comfort and secure fit, while antimicrobial coating helps keep your frames clean and fresh. Whether you’re exploring city streets, chasing sunsets, or carving your own course, these prescription frames bring dependable performance, timeless style, and clear vision wherever life takes you.

KEY FEATURES:

• Classic square browline silhouette with vintage-inspired style.
• Hybrid RELIALITE® and metal construction for lightweight durability.
• Designed for a comfortable fit on wider face shapes.
• Metal alloy temples with rubber temple tips for added comfort and grip.
• Adjustable nose arms for a secure, personalized fit.
• Antimicrobial frame coating helps defend against bacteria and microbes.
• Features the BEX® Universatility® System for enhanced adaptability.
• 6 base lens curvature for a slightly curved frame design.
• CE-certified for safe, reliable prescription use.