The UP 310 eyeglasses from Capri 4u, part of the Capri Optics collection, are designed with a focus on durability and style. These glasses are crafted from sturdy plastic material, making them a reliable choice for daily wear. With a design that has remained true to its roots for over 25 years, these frames combine traditional craftsmanship with modern materials like metals with titanium memory and subtle shades of gold, silver, and pewter.