Hummingbird The Florence Set of 5 Blue Light Readers Strength 0 Don't let the blue light blues get you down. With this fabulous five-pack of smart and stylish blue light readers, you'll have plenty of reasons to smile at your screen (and not just because that adorable cat video popped up on your feed). From Hummingbird. Style: The Florence Includes five reading glasses with matching pouches and cleaning cloth Block 73.68% of blue light (380-500 nm) Style: The Florence Includes five reading glasses with matching pouches and cleaning cloth Block 73.68% of blue light (380-500 nm) Each lens measures approximately 1.96" x 1.41" Readers measure 5.27" W x 1.41" H x 5.31" L Bridge measures 17 mm Weight: 4.05 oz Cannot ship to NY or RI