LIGHTWEIGHT DESIGN: Silicon Valley Rectangle Reading Glasses with keychain are feather-light and designed to provide a secure grip with gentle pressure. CUSTOMIZABLE: Allows for comfortable reading at various distances without eye strain. EASY TO CARRY: Foldable design fits into a compact keychain case, making it convenient to carry in a wallet, pocket, or bag. MULTIPLE OPTIONS: Available in strengths of +1.00, +1.50, +2.00, +2.50, and +3.00, suitable for both men and women. MULTIPLE APPLICATIONS: Ideal for reading, writing, sewing, DIY projects, crafts, and other close-up tasks. Also practical for use with phones, tablets, and computers. Suitable for home or office use. Material: Resin Size: Total lens length 11 cm, lens width 42 mm, lens height 23 mm, nose bridge spacing 20 mm