Hosley's Chalkboard Coffee Mugs, Set of 4 Red and White, Heart. Great Value Mothers Day, Party, Gift for Teachers and Friends PRODUCT: Hosley's Set of 4 Red and White Heart Chalkboard Mugs, 12oz USES: They are great for expressing love to a special one in your life. BENEFITS: These cups are great gifts for birthdays, anniversary, special occasions and weddings. MEASUREMENTS/MATERIAL: Each one measures 12 oz, set of 4 and made of ceramic. HOSLEY BRAND PRODUCTS: Hosley brand products are made from quality raw materials with minimal wastage at every step of production. With the goal of achieving a neutral carbon footprint, please recycle and help leave Mother Earth better off for future generations.