Step 1: Check your foot size.

Step 2: Measure your arch shape.

Wet your foot, step on a brown paper bag and trace your footprint. If your footprint shows the entire sole of your foot with little to no curve on the inside – or if your shoes show the most wear on the inside edges – this means you have low arches or flat feet. You'll want a sneaker with maximum stability to build up the arch side and support.

If the footprint shows only a portion of your forefoot and heel with a narrow connection between the two – or if your shoes wear out mostly on the outside edges – you have high arches. Look for a well-cushioned sneaker with a soft midsole.

You have a neutral arch if your footprint has a distinct curve along the inside, and your shoes wear out evenly. You can wear most any shoe. Look for a sneaker that has the right mix of cushioning for shock absorption and some arch-side support.

Step 3: Shop towards the end of the day.

The longer you’re on your feet, the more they swell. Most people's feet are actually largest at the end of the day, after their daily activities. It's important to fit and buy your sneakers at that time.

Step 4: Wear the right socks.

Ditch the cotton socks. When it comes to fabric, choose socks made from a combination of acrylic, nylon and spandex, which help keep your feet dry and provide extra padding for comfort.

If you have had a foot injury or have a condition that affects your feet, follow any instructions from your doctor. If you have diabetes, which can increase your risk for foot problems, talk to your doctor about proper foot care.