Mattress: Get a AirComfort breathable baby cot mattress. Eco-friendly: Made from an eco-friendly core with eco polyester fibre which offers a comfortably ventilated sleep. Features: Hypo-allergenic, reversible and has a waterproof liner which prevents liquids from penetrating to the core of the mattress. Coil type and firmness: Extra firm, no dip, pocketed coil. Options: Choose either a small (120 x 60 x 13cm) or large (140 x 70 x 13cm). Aircomfort Baby Cot Mattress | Small | Living Social