3 part iPhone X case - 76g total weight.

Features:

Inner flexible shock absorber
Outer thin hard shell for day to day
Outer tough shell - 2 part slide and snap-on for even more protection.
Lanyard attachment
Outer flexible shell use instead of the outer tough shell. Bouncy and protective.

Designed so you can have the inner two cases for day to day and when you need a beefier, stronger case you can slide on the two part outer on. complete with lanyard attachment. The outer case should be printed with 2 perimeters and 0% infill so that it can absorb force.