Carson MagniSlide 2.5X Credit Card Sized Fresnel Magnifiers with Lock-On Case (MC-22, MC-22MU) Fresnel credit card sized wallet magnifiers with a built-in soft case includes set of 12 magnifiers Magnification: 2.5x power each Fresnel magnifier is attached to the case so you will not be able to separate completely Extremely compact, lightweight and ergonomically designed to fit in your wallet or Purse Perfect to take with you on the Go for reading books, menus, magazines, coupons, recipes, maps and so much more Backed by Carson's limited Lifetime Warranty