These Bedliners are 100% waterproof, which means it will not allow the fluids to reach your nice mattress or designer bed sheets. They are Heavy Duty and can be used to move the patient rated up to 350 pounds weight. Use and throw. No need to get your hands dirty. Just pull it off once it is wet and throw it in the trash. Remember these are not plastic sheets and washable sheets. It will stay put. Due to the tape facility on the sides, it will stay where you taped it, so no more slip-ups while sleeping or sitting. No need to tuck or wrap the lining around the mattress covers. The outer lining is made up of PE sheet. These linings are breathable and have soft texture so no more crinkling sound of plastics for you. You can sleep comfortably throughout the night. You can carry it anywhere you like. It is easy to carry anywhere you go. As the packages are small and hassle free. No need to waste hours to pack. Workable with any kind of seating such as wheelchairs, couches, beds, car seats, etc. Not limited to bed only, will secure anything you wish. The inner material is Non-woven, includes Tissue Paper kind of material, and few other materials which absorb the fluids and keep the upper as well lower layer dry and free from any wetness. One size which offers maximum coverage, absorption, and protection.