The 40 oz Owala FreeSip bottle is designed for all-day hydration with a unique built-in straw and wide-mouth opening, so you can sip upright or tilt back for a big swig. Made from durable, BPA-free materials, it features double-wall insulation to keep drinks cold for up to 24 hours. The leakproof, flip-top lid locks securely, and the convenient carry loop makes it easy to take anywhere. Perfect for workouts, travel, or keeping at your desk, the large 40 oz FreeSip offers high capacity without sacrificing style or comfort.