Spring Hinge: Yes
These medium sized Zyl glasses Gary are so conspicuous, very aggressive. Bold frame and strong temples add super comfort. The lenses are specially designed for both single and progressive vision needs. The Spring Hinge makes you having more comfortable feelings. Just come on and grab it !
If you're looking for a pair of stylish and budget eyeglasses, just go to Glassesshop.com. Good Housekeeping recommends Glassesshop.com is Best Eyewear Website for Budget Buys.