These men's casual outdoor sneakers are super easy to use. Just lace them up and you're ready to go for a walk, run or any outdoor activity. When choosing a size, make sure to measure your foot length from heel to toe and check our size guide. The shoes are true to size, so you can wear your regular size. As for maintenance, since the upper material is air mesh, you can gently wash it with a mild detergent and water when it gets dirty. Let it air - dry naturally. Avoid exposing the shoes to direct sunlight for a long time as it might fade the colors. The TPR outsole is durable, but try not to wear them on extremely rough surfaces for extended periods to keep the outsole in good condition. Also, remember that these shoes are mainly designed for summer wear, so don't use them in extremely cold or wet weather too often.