Harmonie "Secure Tuck" Tuckable Underpads. SecureTuck Underpad Super absorbent Polmer pad holds 1000 cc of fluid. Wings tuck securely in place with-out bunching; shifting or adhering to your skin. Provides a smooth wrinkle-free surface. 27" x 70", case of 75, 5 packs of 15. 36" x 70", case of 50, 5 packs of 10.