How to use: You can wear this shirt on its own in warm weather or layer it over a T - shirt in cooler temperatures. It goes well with jeans for a casual look or with dress pants for a more formal occasion. Attention: Always check the size chart before purchasing to ensure a proper fit. Since it's made of polyester, it might be a bit static - prone in dry weather. Maintenance: Machine wash it in cold water with similar colors. Use a gentle cycle to avoid damaging the strap, chain, and zipper details. Tumble dry on low or hang it to dry. Iron it on a low - heat setting if needed.