Number of Mattress Coils 1020. Expands fully in 48-72 hours, with 365-night trial and 10-year warranty for peace of mind. Mattress Coil Type Pocketed Coil. Included Components Mattress. Fiberglass-Free & Safe for Sensitive Skin – This queen size mattress made with non-toxic, eco-friendly materials (100% Fiberglass-Free or harmful additives), odorless right out of the box.