MACKBOOK M4 13inch SHELL CASE

This shell case is crafted to snap onto your MacBook Air’s top and bottom halves, giving your laptop a protective “skin” without significantly changing its profile. The outer material is typically a hard polycarbonate (PC) plastic shell — rigid enough to resist minor knocks and scratches, yet slim enough to preserve the sleek look of the MacBook. For example, one blanket specification describes material as “premium polycarbonate … impact-resistance and dimensional stability