①. The grounding mat is made of environmentally friendly and non-toxic 1mm thick Pu leather and polyester (base fabric). Lightweight and portable, soft and non-slip, with conductivity and durability, it is effective for grounding the body. ②. The grounding mat can transfer the trace negative charge carried by the earth to the body, help improve sub-health, increase energy, improve sleep quality, relieve stress, muscle pain and tension, and assist in restoring health. Suitable for all ages, including pregnant women and babies. ③. With the leather side facing up, just plug the grounding wire into the grounding port of a standard power outlet. Let your skin directly contact the bed grounding mat, whether it is your hands, feet or any other part of your body, you can experience the effect of grounding. ④. Enjoy the benefits of connecting with the earth anytime, anywhere! On the bed, on the floor, on the table, use it as you like. Just wipe the surface of the grounding sleeping mat with a clean damp cloth and mild soap, and let it dry completely before use. ⑤. The package contains grounding mat*1, grounding wire (15')*1, user manual*1. There are diagrams in the manual to explain how to test whether it is conductive. Note: The test pen is only used to test whether the product contains silver fibers, and is not used to test whether the ground wire is connected. Even if the ground wire is not connected, the tail light of the test pen lights up, proving that the product contains conductive silver fibers!