To use this bodystocking, simply step into it and pull it up over your body until it fits snugly. Since it's a single - size piece, it should fit most body sizes well. When wearing, make sure the long sleeves are properly adjusted on your arms. As for maintenance, it's best to wash it in cold water with a gentle detergent. Avoid using bleach as it can damage the fabric. After washing, hang it to dry instead of putting it in the dryer. Also, remember that the thong is not included with the product, so you'll need to wear your own. Store the bodystocking in its box when not in use to keep it clean and easy to find.