Availability: 8 in stock
The Flexon J4009 eyeglasses bring Flexon’s proven memory metal technology to a classic rectangular frame designed specifically for kids and young teens. Built for boys who need prescription eyewear that can keep up with school, sports, and everything in between, these full-rim metal frames feature the same titanium-based alloy that’s made Flexon the go-to choice for parents who’ve had enough of bent or broken glasses.
The J4009 features Flexon memory metal in both the bridge and temples—a nickel-titanium alloy originally developed for aerospace applications. This material allows the frame to flex, bend, and twist far beyond what traditional metal frames can handle, then return to its original shape. For active kids, that means fewer trips to the optician for adjustments and far better odds the frames survive being sat on, dropped, or stuffed into a backpack. The full-rim construction provides maximum lens stability and durability, while the lightweight metal keeps the frames comfortable for all-day wear at school.
The J4009 offers what Flexon calls “a classic look for juniors”—a clean rectangular shape that works well for boys with rounder face shapes, helping add definition without looking too grown-up or too young. Available in three versatile colors (black, navy, and gunmetal), the frame pairs a flat metal bridge with color-accented temples. Two size options (49mm and 51mm lens width) accommodate different ages and face sizes, with an 18mm bridge and temple lengths of 135mm or 140mm depending on size.
These frames are fully prescription-ready and compatible with single-vision, bifocal, and progressive lenses. The stainless steel construction is hypoallergenic, corrosion-resistant, and designed to hold its shape longer than conventional metal frames. Parents consistently cite durability as the top priority when choosing kids’ eyeglasses—metal frames can bend out of shape when dropped, but Flexon’s memory metal construction solves that problem. The J4009 is backed by a manufacturer’s warranty and represents a smart investment for families tired of replacing broken frames every few months.
