Mcoorn 4 Pack Computer Blue Light Blocking Reading Glasses Flexible Lightweight Anti Eyestrain Portable Readers for Women Men +2.75

Lightweight and Flexible: Frame and lense together weight is 14G,the flexible frame and temples make them even more comfortable.
Special Design:Unlike other eyeglasses, we have a unique interlocking system which does not use screws which get loose in order to keep the temples in place and pivot well. Most of the reason eyeglasses break is the cheap way the screws are put in and when they get loose glasses fall apart. With our unique method of interlocking the temples onto the main frame of the glasses in a clicking mechanism, it totally eliminates the temples from ever becoming loose on your pair of eyewear.
Anti-slipping tips and Portable: There is a silicon tips on the temple,when you lower your head, the glasses do not slip easily.Temple have a clip,can clip on pocket.
Magnification Strength:+1.00 +1.25 +1.50 +1.75 +2.00 +2.25 +2.50 +2.75 +3.00 +3.25 +3.50 +4.00 available
Blue light blocking:They have greatly enhanced reading on computer,ipad and kindle apps,reduce eye strain.