The new TWIST bottle 590 with an optimized ergonomic design, easy squeeze thanks to a softer material and new bottle cap with a high flow, self-sealing and leak-proof valve and optional dirt cover. SPECIFICATIONS: Key Features 590 ml volume New leak-proof, self-sealing bottle cap with a high water flow valve and optional dirt cover Dishwasher-safe BPA-free polyethylene Fits all TWIST bases