Eye Care 4 U Vision have these Large Night Vision Spring Snap-on Sunglasses available to buy online today. These large spring snap-on come in night driving yellow, are easy to use and offer full UV and polarised protection, reducing glare and easing eye strain. The hidden clips mean the snap-on look like actual sunglasses when worn. Comes in lens width 55mm, depth 45mm and overall length 130mm and can expand to 140mm. These snap-on comes with a case and a cloth and are manufactured in the UK to British standards. They can be fully extended with the spring hinge to adapt to any size.