Cycleliners - Waterproof, Leakproof, and Reusable Period Bed Sheets Protector (Twin, Burgundy) Period- Proof: Cycleliners protect against menstrual leaks and stains on bedding and sheets. It is 100 percent waterproof, yet breathable, and noiseless Soft, Luxurious Comfortable Material (No Plastics or Vinyl) Discreet color, Stain Resistant, Lightweight for quick wash and dry Easy to use: Simply place over sheets and tuck in to secure on bed Wide Protection Area: 36"x 28" Plus side flaps 18"x 28" each