Insulated for Cold or Hot beverages. It keeps it cooler or hotter 10 times longer. Wide mouth for ice cubes, easy cleaning, and refill. The bottle doesn't sweat. Lightweight and durable. Off-center spout for better flow = Swallow less air. No loose parts. One-hand operated. No BPA or other toxins. No plastic taste or smell. Our MultiCap also fits standard plastic water bottles.