oz size. Like the 32 oz, the 40 oz Sport Bottle was crafted with the active lifestyle in mind. It’s completely leakproof with the straw down, cup holder compatible, and easily carried with the ergonomic bucket handle. The 40 oz Sport Bottle is the perfect bottle for workouts, hikes, or everyday adventures. Product Details: * Product Details: * 40 oz Capacity * Completely Leakproof * Circular Flip Straw * Cup holder friendly * Bucket handle * 18/8 Stainless Steel * Rubber Base * Ergonomic Design * BPA Free * Dishwasher Safe