The Ver-Tex cover provides a cool to touch feeling and continuous heat deflection,regulating your temperature for a cooler nights sleep. Filter Fabric behind Air-X ventilated panels create a one way air flow baffle; prevents allergens and dander from entering the pillow core. Dual construction: top is React foam crown layer, bottom is React a blend. These combine to create a support core that adapts to you without push back, eliminating pillow bounce to improve deep sleep. The 0.0 pillows are for and x-small body frame.