HydraLock SA Super-Absorbent Dressings feature a non-adherent contact layer and a waterproof backing that prevents strikethrough. HydraLock SA rapidly absorbs wound exudate into the super absorbent polymer core in order to minimize the risk for maceration while supporting a moist wound environment conducive to autolytic debridement, normalization of wound bed temperature, and the formation of granulation tissue and epithelialization. It is ideal for moderate to highly exudating wounds. HydraLock SA must be secured in place with tape or other preferred securement methods. Sterile and Latex Free. Available in 3 sizes: 3" x 3", 4" x 4", and 6" x 10".