A Diaper That Just Works. Hello Bello's cutting-edge core contains a specially-designed, super-absorbent material that quickly locks wetness away in bubbles of leakage protection. Plus, the inner and outer layers are super soft with a snug fit for supreme comfort. Happier baby = happier you! Soft, Stretchy, Comfy Fit. Ultra-soft, cloth-like feel, inside and out, wraps your baby tenderly. Stretchy side panels for freedom of movement. Stays snug when soiled, reducing sag and keeping a secure and comfy fit.