Efficient Heat Distribution: Designed with multiple ventilation holes, this wooden lumbar pillow ensures even distribution of heat, providing a soothing and consistent warming experience Adjustable Temperature Control:The Lumbar Support Pillow is easily manage the temperature by rotating the opening; a larger opening increases the heat intensity while closing it helps in cooling down quickly Material: Crafted from wood, this Sauna Backrest Pillow is sturdy and Breathable Portable : This traditional chinese neck pillow is easy to carry and great for travel or home use Ergonomic design: This cervical neck support conforms to ergonomic design, providing effective support for your neck and Lumbar Size Chart: 33cmx19cmx5cm/12.99inchx7.48inchx1.97inch Package Includes: 1wood waist pillow 1fabric cover Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.