SOG Aegis AT 3.13 inch Folding Knife - Designed for outdoor users， Aegis AT features rapid assisted opening with SOG’s innovative ambidextrous AT-XR Lock with an ergonomic handle and grip pattern for comfortable use. Aegis AT is easy to carry， with a highly functional 3.1in cryogenically heat-treated D2 stainless steel blade. Its powerful XR locking mechanism also features solid built-in blade locking safety and spine-mounted safety system. The next evolution of the legendary Aegis.