I purchased two of these twin mattress encasements for my kids. They have held up wonderfully over the past few months. They are definitely waterproof. My kiddo spilled juice on his bed and nothing soaked through to the mattress. They aren't noisy to sleep on. (I will add that we have memory foam mattresses. That may be the reason for no noise.) They are easy to remove and clean when needed. It was definitely money well spent.
Protect And Comfort Your Mattress With FeelAtHome 100% Waterproof Fitted Cover For Twin Size - Soft & Noiseless Cotton Terry Fabric
18 Review
Biloban Box Spring Cover (4/5/7/9/13/17Inches) Twin, High Profile Waterproof Mattress Protector, 6 Sides Wrapping Zippered Mattress Encasement Cover
34 Review
Twin Mattress Protector Waterproof Soft & Breathable Terry, Noiseless Mattress Cover Fits Up -14'' Depth, Skin-Friendly Machine Wash Mattress Protector
29 Review
2-Pack Twin Size Mattress Protectors With Waterproof And Cooling Features - Soft Bamboo Cover, 3D Air Design, Noiseless And Breathable Mattress Pad, Fitted For 8-18 Inch Deep Pockets
18 Review
Heavy Duty Waterproof Aozzy Air Conditioner Cover For Outdoor Window Units With Adjustable Straps - 17" W X 12" D X 13" H Inches
31 Review
Secure Your Swing With Safe And Easy Tree Swing Hanging Kit - 2000 Lb Breaking Strength And Quick 10Ft Long Strap Installation
34 Review
Small Seagrass Belly Basket By BlueMake - Perfect For Storage, Plant Pot, Laundry, Picnic & Grocery!
41 Review
Stylish Solid Stainless Steel Metal Strap Replacement Band For Fitbit Versa 2, Versa Lite, Versa SE - Compatible With Men And Women - Black
31 Review