A pioneering U.S. startup, Cast21, has launched next-generation casts for severe sprains and fractures. Crafted from advanced resin, these casts are fully waterproof, breathable, and allow personalization with drawings from loved ones.
Anyone who's worn a traditional cast knows the ordeal—whether on an arm or leg. The limb is immobilized with minimal airflow, leading to intense itching that can feel unbearable, unpleasant odors, and strict no-water rules that make showering a challenge.
Cast21 addresses these pain points with a superior resin-based cast. It securely immobilizes the injury while prioritizing comfort and convenience.

As reported by Metro UK on November 20, 2019, Cast21's cast is hailed as revolutionary. Its large openings ensure breathability, eliminating itching as shown in product images. Fully waterproof, it withstands showers and easy cleaning. You can even paint or decorate it, though the surface area is more compact than traditional casts.
Application takes just 10 minutes, using quick-hardening liquid resin for reliable support. This innovation holds potential for military field medicine and widespread hospital adoption. Cast21's next phase involves prototype testing in healthcare facilities ahead of full commercialization.
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