Insulated Drinking Tumbler Cup With Straw & Lid. 20oz. Travel Mug. Plastic Tumbler Mug Spiral Straw. 20 oz. Mason Jar Style. Double Wall Insulated. Green DOUBLE WALL INSULATION. Keeps hot drinks hot and cold drinks cold. Condensation free. 20oz (590mL) holding capacity Matching color lid/ bottom & reusable Spiral Straw. Great fun for kids and Adults 100% BPA free food grade plastic (acrylic) Quarter twist matching color lid with silicone seal to prevent leakage through lid.