To wear this cardigan, simply slip it on over your shirt. It looks great with both formal pants for work and jeans for a casual look. When it comes to maintenance, it's best to follow the care instructions on the label. Usually, you can machine - wash it on a gentle cycle with cold water. Avoid using bleach as it may damage the acrylic material. After washing, reshape it while it's damp and lay it flat to dry. As for sizing, make sure to check the size chart carefully as different suppliers may have variations. If you're between sizes, it's often better to go for the larger size for a more comfortable fit.