New Thermally Reactive Advanced Protection (TRAP) breathers eliminate moisture from hydraulic reservoirs. The breathers remove atmospheric moisture at only 15% relative humidity and are said to outperform traditional desiccant breathers. The unit's porous walls are uniformly coated with a thin film of water-absorbing chemicals. The high-surface-area coating rapidly removes water vapor while minimizing size and weight. Unlike desiccant breathers, this open porous structure minimizes flow restrictions. And it regenerates its water-holding capacity with each flow cycle, extending life. TRAP breathers are available in a variety of housing configurations and materials, with optional electronic indicators.