These men's casual lace - up sneakers are perfect for spring and autumn. To use them, simply measure your foot length from heel to toe and select the right size according to the size guide. Lace them up tightly for a secure fit. When it comes to maintenance, you can clean the upper flock fabric with a soft brush and mild detergent. Avoid soaking the shoes for a long time to protect the materials. For the insole, you can take it out and air it regularly to keep it fresh and prevent odor. Also, store the shoes in a cool and dry place when not in use to maintain their shape and quality.