GoGo Green 2GoPak 18 oz, reusable, refillable, compact and lightweight. Check out all 2GoPaks! Flat when empty, stands upright when full; carabiner included. Just perfect for everyday use or recreational sports BPA free, freezable,dishwasher safe and recyclable. Our odor and stain resistant inner polyethylene lining keeps your drink tasting fresh Uses fewer resources and materials to produce and weighs 85% less than rigid bottles. RETHINK - REFILL - REPEAT