Ultra-Soft & Breathable: Made of 100% soft jersey knit cotton, the bassinet fitted sheets offer a smooth touch perfect for your baby’s delicate skin. And the breathable fabric ensures optimal airflow, keeping your little comfortable day and night, promoting a restful sleep environment. Snug Fit: Engineered with elastic edges, our sheets stay snugly in place on 20″ x 33″ standard bassinet mattresses like Koolerthings, BCOL, BabyBond, Jimglo 3 in 1, Cowiewie Baby Bassinet. Stretchy for Safe Sleep: The bassinet fitted sheets feature a flexible, stretchy design that ensures a tight, secure snug fit that stays in place, even when your baby wiggles or moves. This eliminates loose fabric and keeps the mattress surface smooth, so your baby can sleep undisturbed. Easy-Care & Durability: These bedside sheets are machine washable in cold water on a gentle cycle, maintaining their softness and shape wash after wash. The high-quality knit fabric resists pilling, shrinking, and fading, ensuring long-lasting use without compromising on comfort or style. Well-Packaged Gift Ready: Arrives in crush-proof, reusable packaging, this bassinet sheet set includes 3 individual fitted sheets with unique pattern and solid color, perfect for parents to keep up with frequent sheet changes.