Ladybird Travel Cot Mattress The Ladybird Travel Cot Mattress is an ideal thicker upgrade for many travel cots. It provides your child with more added comfort and good support to get the best night's rest when visiting family and friends. It is a particular benefit for regular use. The foam support is 5 cm thick and the cover is water repellent. 119cm x 59cms mattress is suitable for most 104cm x 74cm travel cots 96cm x 63 cm is suitable for Ladybird Bassinette Travel Cot.