When you should measure yourself again
Sep 20, 2026
Short answer: Measure yourself once a year, or whenever something starts to fit differently. Most people still buy a size they had years ago, and that is the most common reason clothes do not fit when they arrive.
Your body changes slowly
Small changes over several years add up and can eventually equal a whole size without you noticing. It happens gradually, so you rarely see it in the mirror. Suddenly bamboo boxers do not fit quite like before, even though you have bought the same size for years without thinking about it.
Your clothes tell you first
When the waistband starts to press or a top hangs differently across the shoulders, it is a sign that something has shifted. It is worth paying attention before you order again. The same goes for the cuff on bamboo socks, which can feel tighter on the calf or slide down if your foot or leg has changed a little.
Write the numbers down with a date
Note your measurements together with the date, ideally in a note on your phone so you always have them. With a date you can see how quickly something has changed and whether it is moving in one direction. Use the numbers next time you buy bamboo joggers for men, so you choose for your body as it is today.
When to measure during the day
Try to measure at the same time each time, for example in the morning before breakfast. The body varies a little through the day, and the waist can be slightly larger in the evening. Measuring at the same time makes the numbers comparable from year to year, and small shifts that do not affect your size will not confuse you.
How to measure correctly
Use a soft tape measure directly on the skin or over thin underwear. Keep the tape level all the way around and do not pull it tight; it should rest lightly against the body. Stand relaxed and breathe normally. If you are unsure, measure twice and use the average. It takes a few minutes and makes a real difference.
When everyday life changes
There are periods when it makes sense to measure more than once a year. That could be after a spell of more training, a new routine with less movement, or after illness. In those periods the body can change faster than usual, so take your measurements again before buying anything that is meant to fit close.
Compare with clothes you already own
Besides body measurements, you can measure the clothes that fit you best right now. Lay them flat on a table and measure the width under the arms and the length. Compare those numbers directly with the garment measurements in a size guide. Body and garment measurements together give the safest basis, especially for a new style.
Make it a habit
The easiest approach is to tie measuring to a fixed occasion, such as your first new underwear of the year or the change of season. That way it becomes a small routine rather than something you have to remember. Over a few years you build a simple record that makes every purchase easier and saves you returns.
Frequently asked questions
How often should you measure
Once a year is enough for most people. Measure more often if your clothes start to fit differently or your daily routine has changed a lot.
Which measurements should you take
Chest, waist and hips cover almost every size guide. Add your foot length so you can also pick the right sock size without guessing.
What if you have not measured in years
Then do it now, note the numbers with a date and use them for your next purchase. It is never too late for an updated starting point.