To wear this men's sweatshirt, just pull it over your head and adjust the sleeves. It's suitable for casual outings, sports, or just lounging at home. When choosing a size, make sure to check the size chart carefully as different suppliers and brands may have variations. For maintenance, machine - wash it in cold water with like colors to keep the blue color vibrant and the fabric in good condition. Avoid using harsh detergents that could damage the embroidery and patchwork. Hang it to dry instead of using a dryer to prevent shrinking. With proper care, this sweatshirt will last you a long time and remain a stylish addition to your wardrobe.