Replacement safety mattress made to fit the standard Chicco Next to Me Crib Made from environmentally friendly and fully recyclable high density material All the materials for our Cot Mattresses are sourced in the UK. Conforms to BS 1877 Part 10 for safety and performance , BS 7177 and BSD5852 Part 1:1978 For Hygiene Reasons We are unable to accept mattresses back for exchange or refund once the packaging has been opened. This does not affect your statuary rights. We do advise that the hardboard from the original mattress is kept and used underneath your new replacement mattress.