Using these sneakers is easy. Just put them on like you would with any other pair of shoes. When choosing a size, make sure to measure your foot length accurately and refer to the size chart. As for maintenance, you can clean the cotton upper with a soft brush and mild soap when it gets dirty. Avoid machine - washing as it may damage the fabric. Also, don't expose them to direct sunlight for a long time to prevent color fading. The rubber outsole is durable, but try not to wear them on very rough or sharp surfaces to avoid cuts. With proper care, these sneakers will serve you well for a long time.