OptiLock Non-Adhesive Super Absorbent Wound Dressing, 4″ x 4″ with 3.3″ x 3-1/2″ Pad – Replaces 60MSC6444EPZ.Super-absorbent polymer core. Locks in drainage under compression. Adjusts absorption to the amount of drainage. Protects skin from maceration. Non-adherent wound contact layer. Indications: pressure ulcers, partial and full-thickness wounds, leg ulcers, lacerations and abrasions and wounds under compression. Contraindications: third-degree burns, known sensitivity to the product itself or its components; do not use on non-exudating or minimally exudating wounds. May be left in place for up to 7 days; Dressing change frequency will depend on amount of drainage.