Try a new pair on an ordinary day. Wear new alpaca crew socks with the footwear you use most often before relying on them for a long shift, trip, or trail day. A short walk around town or a few hours at home will tell you whether the cushion and fit are working together.
Do not mistake tight for supportive. A good sock feels secure without making your foot feel compressed. Your toes should still have room to move, your heel should feel settled, and the top should not distract you as the day goes on. If the combination feels crowded, choose a lighter cushion or roomier shoe for that pair.
Wash with a little patience. Follow the care label, use cool water when machine washing is allowed, and air dry. Avoid bleach and high dryer heat. Woollow's guide to washing wool socks has a straightforward routine to help your socks stay ready for another wear.
Build a rotation around your real life. Keep the pairs you reach for most where they make sense: near your work gear, beside the boots by the door, or in the drawer you use every morning. With a few pairs in rotation, you are less likely to pull on a sock before it has had time to dry and recover.
Judge comfort at the end of the day. A sock can feel great when you first put it on. The better test is how it feels after the drive, the errands, the workday, or the walk home. A comfortable crew sock supports the parts of your day that are usually less glamorous but matter more to your feet.