Available in Two Sizes for Fit Standard Size (28.7 x 5.7 inches): Fits necks under 13.8 inches, ideal for teens or petite users. Large Size (30.7 x 5.7 inches): Fits necks between 13.8 and 17.3 inches, suited for adults and broadshouldered users. Easy Inflation and Deflation Inflate quickly by opening the front air intake, blocking the rear air outlet, and pressing the builtin front pump until the desired firmness is achieved. Adjust firmness to match your comfort level. Deflate easily by pressing the front intake button to release air. 360Degree Neck Support Engineered neck support system with cloudlike structure. Provides stable support to the sides, back of the head, and chin. Helps maintain an neck angle for comfort and posture during travel. Adjustable for Comfort Threestep loosening adjustment allows you to change neck support strength to suit preference. Soft material contours to the neck for a relaxed, natural position. Practical for Various Situations for use on airplanes to prevent neck strain and improve rest during long flights. Ideal for car travel, providing comfort on road trips or long commutes. Useful at home or in the office for short breaks or relaxation sessions. Durable and Comfortable Design Made with quality materials designed for repeated use while maintaining softness. Ergonomic structure supports the neck gently without causing pressure points.