* Open Coil * Medium to Firm * Suitable for All Sleepers * Temperature Regulating * Arrives in a Box This mattress is a harmonious blend of comfort, eco-friendliness, and safety, tailored for bunk beds, ensuring an unparalleled sleep experience. The innovative e-Spring core serves as the backbone of this mattress, providing essential support to growing bodies during their crucial development years. The Bunk Bed Bliss Mattress boasts breathable e-Fibre™ comfort layers, engineered to create a snug and well-regulated sleep environment. What makes this mattress truly stand out is its commitment to sustainability – 80% of the materials used are recycled plastic, contributing to a greener planet, and the entire mattress is 100% recyclable.Need to throw out your old mattress first? View our information on [mattress recycling and collections](https://www.dunelm.com/info/about/mattress-and-furniture-recycling).