What Benchmade says:
Following the introduction of the Immunity family, the 290-241 Full Immunity, a new Gold Class limited variant, offers a unique build for the collector looking for a tactical yet compact EDC knife. For quick, compact utility, the 290-241 Full Immunity is easily deployed from concealment. This sub-compact folder is a shot in the arm of unique, ultra-premium materials, featuring Ægir patterned Damasteel in a Wharncliffe blade style, unidirectional Carbon Fiber handles scales with an understated black wood-grain effect, and bright Sapphire Blue accents including the beaded lanyard for easy retrieval. The 290-241 Full Immunity™ is only available through December 31, 2024.

Damasteel Ægir Premium Stainless Damascus (58-60 HRC)
A stainless that combines corrosion resistance with superior strength.

Wharncliffe
Characterized by a sharp cut from the spine down to an acute tip in line with a straight edge.

Unidirectional Carbon Fiber
Strong and lightweight, a carbon reinforced material with fibers running in a single parallel direction.