The MJF Corkcicle Sport Canteen features a drink-through cap and bag clasp for affixing the bottle to your bag, making it perfect for a busy, on the go individual. The bottle is BPA free and crafted from stainless steel with proprietary triple insulation. Drinks stay ice-cold for up to 25 hours or hot for up to 12 without freezing or sweating. Add ice to your cold drink to extend the 25-hour threshold even longer! The design is slip-proof, with a silicone bottom, easy-grip sides, and a screw-on cap.