Edison Child Mini Crib Mattress3" The Bundle of Dreams 3" Mini Crib Mattress is a 2 Stage, Mini Crib Mattress that has an Organic Cotton, water repellent, removable & machine washable. This 100% Breathable mattress not only helps regulate temperature by allowing air to pass through the entire mattress, but there are no VOC's, no off gassing (that chemical smell when you open a mattress with foam), and no toxic emissions. This mattress offers two different firmness levels on either