Condenser microphone in a shockmount.
Commonly found in two places in the audio industry – rack cases and microphone stands – shockmounts are systems designed to isolate a device mechanically from its stand or case.
In rack cases, the idea is to prevent damage to sensitive gear by isolating it from shipping and transport bumps, drops and similar catastrophes. Often these cases consist of a case-within-a-case, with the inner case isolated with foam or spring arrangements from the outer.
Microphone shockmounts are designed to reject vibrations transmitted through the stand or boom to the microphone. Several types are in use, one common design using a system of "rubber-bands" to suspend the mic away from its stand.