This is what I used to darken the travel crib before I upgraded to the Slumberpod. The Slumberpod is worth the ext… | Pack and play crib, Travel crib, Pack and play
Bugaboo Stardust Travel Crib – Tadpole
Uniplay Foldable Lightweight Travel Crib, Mattress And Breathable Liner With Side Zipper For Infants And Toddlers : Target