The 1240 mL / 42 oz Big Swig Sr. is a double wall vacuum insulated stainless steel bottle made with pro-grade stainless steel. The durable powder coated finish gives the bottle a modern look and provides extra grip. With a generous capacity and carry handle, this bottle is perfect for long hikes, days at the office, or staying hydrated at the gym. The leak-proof, screw-on cap with spout keeps drinks contained.