Twin Trundle Mattress. This trundle mattress is specially designed for the Maxtrix trundle bed.ﾠ Comfort & Support: Perforated Cooling Gel Memory Foam cradles your body and conforms to your sleeping position. High-density base foam offers superior support.ﾠ Washable & Breathable Cover: Mattress covers offer a breathable, moisture-wicking design and are machine washable. Each cover is made with organic cotton for added comfort and a superior plush feel. Safe & Non-Toxic Materials: Maxtrixﾮ mattresses are hypoallergenic and feature CertiPUR-US certified foams with eco-friendly materials for a clean sleeping surface. Bedding extra. Matching pieces sold separately. Fully assembled. Manufacturer: Maxtrix Furniture.