This convenient ground sheet levels the load so you don&&';;t have to. It provides a wide, stable base that helps prevent sinking or tipping on sand, dirt, or grass. Secure attachment. Center strap and durable corners securely attach the ground sheet to the legs of your Helinox chair. Grab loops assist in securing chair feet. Added stability. Offers complete stability on soft and uneven surfaces. The ground sheet can also be used as a chair anchor when sand or heavy objects are placed on the top as it prevents the chair from blowing over in windy conditions. Performance fabric. All-weather polyester monofilament mesh. Lightweight and portable. Depending on which chair you are purchasing it for, the Ground Sheet weighs a scant 6 - 7 ounces (oz).