Adlens Sundials Instantly Adjustable Eyewear Sunglasses Black and Blue Frame, 1" H x 2" W, Tinted Alvarez Lens, Grey Lens, TR90 Frame and Polycarbonate Lenses.

From -6D to +3D diopters.
UVA and UVB protection.
Continuously adjustable from far to near.
Easily change the glasses to match your needs for a variety of outdoor activities.
Can be adjusted to improve vision for 90% of eyeglass and contact lens wearers who do not have astigmatism.
Award-winning Alvarez Lens technology.
Two wave-shaped polycarbonate plates slide across one another to change the power of the lens.
Frame size 49 ? 22-141.