DUAL MIXING TECHNOLOGY: Shaker ball & mixing grid included in each bottle, so you can choose your technology of preference. 28-OUNCE CAPACITY: Plenty of volume to mix any portion size of your favorite drink. Note: measurements only go up to 20-Ounces (600 mL) DURABLE, CONVENIENT AND SAFE: Top-rack dishwashser safe, leak & spill proof guarantee, BPA-FREE. TAKE IT WHEREVER YOU GO: Sturdy loop top for carrying and securing it anywhere. Fits in most cup holders. PERFECT GIFT IN A BEAUTIFUL RETAIL PACKAGE: High quality box printed in high resolution makes it a great gift for anyone.