Fitinfuser Fruit Flavor Infuser Water Bottles With Insulating Sleeve and Mixing Spring Ball Large capacity for exercise & everyday use, no more running out of water during your workout at gym Leak-proof & spill-proof: screw top features a silicone ring for a leak-proof seal, while the clear cap offers a second level of protection Easy "one-hand" top: push & flip, it's a single movement that requires only one hand, making it perfect for staying hydrated while walking, running BPA-free tritan plastic: tritan plastic is free from toxins and won't leave your drink tasting like chemicals