The JD-3MU, MagniRama™ 3X Power 50mm Magnifying Glasses – Pack of 50 are colorful and fun! These 3x power, 50mm all glass magnifiers provide crystal-clear optics and are a great learning tool for children of all ages. They are small enough and lightweight enough to fit in backpacks or even pockets. Great for the classroom, goody bags and exploring.