Using these Howitzer slip - ons is a breeze. Just use the elastic and adjustable laces to easily put them on or take them off. Wear them all day for comfortable movement. When it comes to maintenance, you can simply throw them in the washing machine as they are machine washable. Make sure to follow the regular machine - washing instructions. Also, when taking out the removable 'We The People' EVA insole, be gentle. Don't expose the shoes to extreme heat or sharp objects to keep the upper fabric and outsole in good condition.