These earrings are approximately 0.86" in width and 0.94" in length. The clasp closure is post-back, making it easy to wear and remove. Each pair includes clear rubber backing to keep your earrings secure during wear. Crafted from high-quality acrylic and Eco-friendly zinc alloy. Nickel, lead, and cadmium-free. (taking these earrings off for water-related activities such as swimming or showering)