This men's summer jacket is easy to wear. Just zip it up, and you're ready to go. The drawstring at the bottom allows you to adjust the fit as you like. When it comes to sizing, remember to check the size chart carefully because different suppliers may have different measurements. If you're used to US sizes, switch to Asian sizes according to the example provided. To keep this jacket in good condition, machine - wash it on a gentle cycle with like colors. Hang it to dry instead of using a dryer to prevent shrinkage. The polyester material is durable, but avoid sharp objects that could damage the fabric. Enjoy the convenience of the cargo pockets for storing small items like keys or a phone.