Pioneer’s innovative, stylish, and long-lasting range of sports flasks are the perfect choice for staying hydrated while on the move! Made from high quality 18/10 stainless steel, these BPA free drink flasks feature a simple clasp-operated leakproof lid, which can easily be opened while running, walking, or cycling for instant refreshment. Thanks to the vacuum insulated double walls, the flask will survive drops, bumps, and scrapes, and keeps drinks ice cold for up to 24 hours!