Feet often ache after a long day of walking because the shoes under them offer too little support, have worn out, or don't match the shape of the foot. Flat footbeds, compressed cushioning, one-size-fits-all arch support and a poor fit are among the most common causes, and footwear is usually the easiest of these to change.

You know the feeling. A good day of errands, a long lunch with a friend, maybe a walk along the water at sunset, and by the time you sit down your feet are telling a different story: a dull ache in the arch, some swelling, tightness across the ball of the foot, and a tiredness that sitting doesn't seem to shake.

It's tempting to blame it on getting older or on being on your feet too much. Sometimes that plays a part. But more often than people realize, the cause is simpler: the shoes. Here are five common reasons feet start complaining by the end of the day.

1. Why does a flat footbed make feet tired?

A lot of sandals look supportive but are essentially a flat piece of material between your foot and the ground. Without real structure underneath, your foot's own muscles and ligaments do all of the shock-absorbing, every step, all day.

2. Is your shoe built for what you actually do in it?

A sandal made for five minutes by the pool isn't the same as a sandal made for a full day of walking through a city. Many of us end up wearing occasional shoes as everyday shoes, and our feet quietly pay the price.

3. Has the cushioning in your sandals worn out?

Foam and padding compress over time. A pair that felt wonderfully soft two summers ago may offer a fraction of the support now, even if it still looks fine from the outside.

4. Is one-size-fits-all arch support working for your foot?

Most footwear is built around an average foot shape that almost nobody actually has. If your arch is higher or lower than that average, a generic footbed works against you rather than with you.

5. Does the shape of your foot match the shape of the shoe?

The right size on the label doesn't guarantee the right fit. Foot width, arch height and toe shape vary enormously from person to person, and a size number can't capture them.

What should you look for in sandals if your feet get tired?

Much of this comes down to footwear choices, not willpower or toughening up. Look for:

• a footbed with real structure, not just soft padding;
• a secure heel;
• flexible materials that move with your foot;
• adjustable straps, for feet that swell as the day warms up.

Our guide to choosing supportive summer sandals goes through each of these.

A quick honest note: if your pain is persistent, sharp, or in one foot only, have it looked at by a podiatry professional. Footwear can't replace a proper evaluation.

How INSOLANCE approaches tired feet

Every pair starts with an imprint of your own foot, reviewed by the podiatry professionals we collaborate with and is built around a personalized insole integrated from the first stitch. The sandal is designed around your foot, not the other way around. See how it works at Process – INSOLANCE FOOTWEAR.