Sleepah Pack and Play Mattress Pad Portable Memory Foam; Double-Sided (Firm for Babies, Soft for Toddlers) Portable Waterproof Crib Mattress + Sheet; Fits Most Pack n Play 38 x 26 x 3 :
NEW BabyStyle Oyster Snuggle Bed Bedside Crib Mattress FULLY BREATHABLE 3019672753388 | eBay
My Brest Friend Travel Mattress Protector Embossed | MYER
Pro Goleem Pack and Play Mattress, Trifold Fitted Waterproof and Portable Pad Soft Mini Crib Mattress for Toddlers, 38 X 26 X 2.25 Inch : Amazon.com.au: Baby