McConnell Dowell | Switch Blade snp-HIDE BIOSPHERE is a frameless design

BIOSPHERE is a frameless design that features a large 10 base lens

Optional Rx insert safety prescription sunglasses to assist with vision when they need it

Our signature Co molded Flexi-Max rubber temples provide superior grip

Advanced  C-Max Plus (anti-fog/scratch) coated on both lens surfaces on Clear Smoke and Amber lenses

Co molded Flexi-Max rubber temples for superior grip pressure free fit durability and extreme comfort

McConnell Dowell | Switch Blade snp-HIDE BIOSPHERE is a frameless designRx Prescription Safety Sunglasses Our range of prescription safety sunglasses all come with optional Rx insert which means that if you need prescription sunglasses sometimes you simply clip in the Rx insert when needed. Switch Blade sunglasses come with the option of prescription lenses. See how you can switch lenses in less than a minute! Smart designs allows for Rx adaptor to be inserted behind single 8 base curve lens.