I have several of these and they work amazingly.
They're soft so there is no crunching sound when you lay on the bed. My mattress always looks brand new when I remove the cover to wash.
Waterproof Twin XL Mattress Encasement With Zippered 6-Sided Cover, PlushDeluxe Premium Quality, And Cotton Terry Surface (Fits 12-15 Inches H)
14 Review
Twin Mattress Protector Waterproof Soft & Breathable Terry, Noiseless Mattress Cover Fits Up -14'' Depth, Skin-Friendly Machine Wash Mattress Protector
29 Review
Protect Your Mattress With A Premium Cal-King Waterproof And Breathable Cover - Deep Pocket And Noiseless Design For A Comfortable Sleep
11 Review
Protect And Comfort Your Mattress With FeelAtHome 100% Waterproof Fitted Cover For Twin Size - Soft & Noiseless Cotton Terry Fabric
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
Stylish Bracelet Replacement Band With Diamonds For Fitbit Versa 2 Smart Watch - Compatible With Fitbit Versa, Versa Lite, And Versa 2 Bands For Women - Silver
28 Review
Black 2-Pack Of Vivere EFHTS Accessories For Hammocks
27 Review
LOFTEK LED Dimmable Floating Pool Lights Ball, 16-Inch Cordless Night Light With Remote, 16 RGB Colors & 4 Modes, Rechargeable & Waterproof, Perfect For Indoor/Outdoor, Exhibition Decor, 1-Pack
38 Review