The STAT-GEL™ gel mattress overlay special gel powder mixes with water to create our pressure relieving highly viscous clear gel. The STAT-GEL™ overlay mattress is created from a medical grade vinyl that is pliable, anti-microbial, and incorporates an easy-to-fill adapter valve. Stat-H2O™ easily converts to STAT-GEL™. The Stat-Gel gel mattress overlay is effective in the prevention and treatment of Stages I-IV pressure ulcers.