The fluid contained within certain mobile device protectors, specifically those featuring shimmering particles, serves a dual purpose. It suspends and allows movement of the decorative elements while also contributing to the case’s shock-absorbing properties. An example is a transparent thermoplastic polyurethane (TPU) shell filled with mineral oil and iridescent flakes.
This internal substance is crucial for the aesthetic appeal of the product, enabling the dynamic swirling effect that is visually attractive to consumers. Its viscosity and non-toxic nature are essential considerations for safety and functionality. Historically, such cases have evolved from simple protective covers to fashion accessories, reflecting personalization trends in consumer electronics.
