The Shadow is a classic sport climbing biner - strong and robust, as well as being light and easy to handle. We tend to think of it as the sophisticated cousin of the Aero. It is similar in overall shape, but by using I-Beam construction we have been able to reduce the weight while retaining strength. It has a clean nose closure to reduce snagging when you are clipping or unclipping. There is also a handy thumb grip on the gate for easier operation.