What Is the Derila Pillow Made Of? Materials & Design Explained

What the Derila pillow is made of matters because the material determines how well it holds shape, how it feels against the skin, and how long it lasts. Here’s a complete breakdown of what’s inside.

The Core: High-Density Memory Foam

The Derila Ergo’s primary material is high-density memory foam — specifically a viscoelastic formulation that responds to body heat and pressure. This means it conforms to the shape of your head and neck rather than pushing back uniformly like a standard foam pillow.

The density matters: cheaper memory foam pillows use low-density foam that compresses flat within weeks. The Derila uses a higher-density formulation that maintains its contour shape under sustained nightly pressure. Across the buyer feedback we reviewed, reports of the foam compressing or flattening out are rare.

The Shape: Butterfly Contour Design

The butterfly contour isn’t decorative — it’s functional. The shape provides two distinct support zones in one pillow:

• Raised outer sections — support the head and fill the shoulder-to-ear gap for side sleepers
• Lower central channel — cradles the neck for back sleepers without pushing the head into cervical flexion
• Wing extensions — allow natural arm and hand positioning without bunching

The Cover: Breathable Hypoallergenic Fabric

The outer cover is a soft, breathable fabric with hypoallergenic properties. It’s removable and machine-washable — which matters for both hygiene and longevity. The cover is designed to allow airflow through the memory foam to prevent heat retention, which is a common complaint with cheaper memory foam pillows.

What This Means for Durability

High-density memory foam typically maintains its shape for 2-3 years with regular use. Buyers using the Derila long-term consistently report the foam holding its contour rather than flattening out. The washable cover extends usable life significantly compared to pillows without removable covers.