Supportive and Pressure Relief: The twin xl innerspring mattress provides great contour support and conforms to your body's curves, aligning your spine and relieving fatigue well. Silent Sleep: The individual pocket springs of the 14 inch twin xl mattress ensure that each zone operates separately, preventing disturbances caused by your and your partner's movement. Breathable & Airflow: The airflow among the individual pocket springs makes the twin xl mattress more breathable than the full-foam mattress and the premium quilted mattress cover adds softness and breathability, providing lasting freshness for you. Safe and Healthy: The 14-inch mattress is certified by CertiPUR-US and Oeko-Tex Standard 100 and is anti-fire yet free of health risks from fiberglass. So the mattress will give you a hassle-free night's sleep. Worry-Free Sleep: The twin xl mattresses come with a 10-year limited warranty to ensure your excellent purchase experience. If you have any issues with your mattress, please contact our customer support team and they will work with you to resolve the issue. Please note that our mattresses cannot be returned once opened.