Square Sunglasses with +3.5 Reading Strength

Our collection of square sunglasses with +3.5 reading strength combines UV protection with the convenience of built-in magnification. These 20 versatile styles let you read menus, books, and phone screens outdoors without switching between regular sunglasses and reading glasses. Crafted from premium materials like durable acetate and lightweight stainless steel, these frames deliver the optician-grade quality you'd expect from glasses costing 2-5x more. Whether you prefer classic black frames or distinctive tortoiseshell patterns, you'll find styles that suit every occasion—from beach holidays to outdoor dining.

Premium Materials Built for All-Day Comfort

Every pair features either flexible acetate construction or sleek stainless steel frames, chosen for durability and comfort during extended wear. Our Essential line uses the same bio-acetate found in luxury eyewear, naturally hypoallergenic and gentle on sensitive skin. For those seeking ultra-lightweight options, select styles incorporate flexible TR90 rubber—a super lightweight material often used to make airplane parts, made by Swiss technology. These unisex frames suit all face shapes and styles, with both medium and wide fit options available. The square shape provides a confident, contemporary look that complements reading glasses in similar square styles if you need matching indoor pairs.

UV Protection Meets Reading Clarity

These aren't just tinted reading glasses—they're proper sunglasses engineered to block harmful UV rays while providing crystal-clear magnification for close-up tasks. The +3.5 strength is ideal for those experiencing presbyopia, the natural age-related change in vision that typically begins in your 40s. Perfect for reading outdoors, checking your phone in bright sunlight, or any situation where you need both sun protection and reading help. If you're unsure whether +3.5 is your ideal strength, our free online vision test gives instant results. You might also explore our square sunglasses with +2.0 strength or non-prescription square sunglasses for different needs.

Frequently Asked Questions