Using these welding sleeves is easy. Just slip them on your arms and adjust the elastic cuffs for a snug fit. When you're using them for welding, make sure they cover your arms fully to get the best protection from spatter and heat. As for maintenance, you can wash them at home up to 50 times, but use a mild detergent. After washing, let them air - dry. Remember not to use harsh chemicals as they might damage the fire - retardant properties. Also, check the sleeves regularly for any signs of wear and tear. If you notice any holes or significant damage, it's time to replace them.