38"x25" Mini Crib Mattress, Dual-Sided Waterproof Breathable Hypoallergenic, Premium Memory Foam & High Density Foam, Portable Travel Crib Mattress, Fits Mini and Portable Cribs Perfect Fit for Mini Cribs: Sized at 38" x 25", ideal for most mini cribs and portable cribs, with a thickness option of 1.5" or 3" for customizable comfort. Dual-Layer Comfort: Optional 3" thickness provides enhanced support, while the 1.5" version is great for travel or minimalist needs. Adorable Space-Themed Cover: Features a soft, breathable cover with a charming space pattern including planets, stars, and moons—fun and soothing for babies. Firm and Safe Support: Constructed with high-density foam that meets safety standards, offering firm support for infant spinal development. Easy Maintenance: Water-resistant and removable outer cover makes cleaning simple, helping to maintain a hygienic sleep environment.