- MEDIUM FIRMNESS, ENHANCED SUPPORT This version upgrades the firmness to a balanced medium feel that suits most users. If you prefer a firmer side sleeping pillow, choose the Memory Foam option. If you prefer a softer pillow, opt for the Polyurethane Foam version. The cervical pillow curve design helps keep your spine in alignment. - SLOW-REBOUND COMFORT WITH CERTIPUR-US MEMORY FOAM The memory foam core offers slow rebound and steady support, with a rebound time of 48-72 hours. The memory foam is CertiPUR-US certified. As a versatile sleeping and neck pillow, it naturally has a slight odor that should dissipate within 3-5 days of airing. - BREATHABLE AND REMOVABLE PILLOWCASE The neck pillow features ice-silk fabric for enhanced breathability, delivering a cooler, more refreshing sleep. Oeko-Tex certified for safety and quality. The pillowcase is skin-friendly and machine washable for easy maintenance. - DUAL-HEIGHT DESIGN FOR CERVICAL SUPPORT Size: 63(11.5/13.5)40.5cm/25 x (4.5/5.3)16inch (LHW) Back sleepers with cervical issues can benefit from the higher side (5.3 inches) of the orthopedic pillow, which is designed with dual horns for improved head and neck support and proper body alignment. The neck support pillow is suitable for back, stomach, and side sleeping. - IMPORTANT NOTE This cooling cervical neck pillow is not intended for medical use. If you have serious cervical issues, please consult a doctor before use. It may take 1-2 weeks to adjust when you first start using the pillow, as your cervical spine adapts to the ergonomic curvature design.