named for the intense training zone

it absolutely should

Nigel features a classic rectangular shape with a transparent olive green frame

Cr is the epitome of modern elegance

With polarized lenses and top-tier UV protection

Colorado Bulldog XL Lens Upgrades:Standard named for the intense trainingThese are the Rx prescription version of the Doc Robins XL Colorado Bulldog XL sunglasses. Choose from standard clear lenses or from our wide selection of prescription sunglasses lenses. Tailor these glasses to your liking with our many lens color options. Colorado Bulldog XL brings a cooler edge to the Doc Robbins XL collection. The glossy black rectangular frame fades seamlessly to clear, offering a unique look that still works for everyday wear.