Includes two replacement 16-ounce Ninja single serve cups and two sip lids. Key features - Two replacement 16-ounce Ninja single serve cups with two sip lids for convenient extra sets. - Cups are designed with four tabs (FOUR TABS). Before purchasing, please verify that the cups you are replacing have four tabs (4 TABS). - Compatible with Ninja blender models BL660 (1100 W), BL663 (1100 W), BL740, BL770, BL771, BL772 (1500 W), BL780 (1200 W), BL810, BL820, BL830. The model number is located underneath the base of the blender and must start with BL. - BPA-free plastic construction for a safe drinking experience. Benefits and compatibility - Practical for quick, on-the-go smoothies and shakes with minimal setup. - Allows you to prep multiple drinks in advance by having spare cups ready. - Easy to replace and compatible with a range of Ninja single-serve bases to extend your blender’s versatility. Use scenarios - Morning smoothie on the way to work: keep a ready-to-drink cup for a fast, healthy start. - Gym or post-workout shake: have a spare cup and lid ready for post-workout nutrition. - Travel or commuting: prepare iced coffee or frozen beverages in advance and switch cups as needed. Construction and safety - BPA-free plastic construction ensures a safer alternative for everyday beverages.