Knee braces are widely different, so too are their care instructions. Some are perfectly fine to go into a washing machine, but others are more delicate and will require a hand wash. Due to their elasticity, almost all will need to be line-dried and not put into a tumble dryer.u003cbr/u003eBefore attempting to wash your knee brace, look at the manufacturer's care instructions to ensure you don't ruin the brace, leaving you likely unable to use the warranty for a replacement.