Hey there! If you've got a pull-out sofa bed, this waterproof mattress protector is about to become your new best friend. It's specifically designed for sleeper sofa queen mattresses measuring 60x72 inches, with deep pockets that can handle up to 8-inch thick mattresses. The magic is in the TPU membrane coating on the reverse side - it effectively repels liquids so spills and accidents won't seep through to your mattress. But here's the cool part - even though it's waterproof, it doesn't feel like plastic! The top layer is made from ultra-soft bamboo viscose jersey that's actually breathable and has moisture-wicking properties to keep you cooler than other fabrics. It's thin enough that you'll barely notice it's there, preserving the original feel of your mattress. Whether you have guests staying over or use your sofa bed regularly, this protector stays securely in place thanks to its fitted sheet design with stretchable deep pockets. Cleaning is a breeze - just toss it in the machine with cold water and tumble dry on low heat. Pro tip: you might want to buy two so you've always got one ready while the other is in the wash. It's also adjustable bed friendly, meaning it won't bunch up or shift when you move the mattress. Seriously, for the peace of mind it gives you against stains, moisture, and allergens, this protector is totally worth it. Your sofa bed mattress will stay clean, dry, and fresh for years to come!