Mattresses and Accessories - Endurance Bed 2.0, Stone Gray : The Endurance 2.0 bed is one of our most popular products. The Endurance bed is ligature resistant, easy to clean, impact resistant, and bed bug proof. All Endurance products are infused with our Cor X anti-microbial compound which will help prevent the spread of germs. The 2.0 bed can use a 36x80 mattress or smaller. Restraint Rings can be attached to the bed if necessary.