Start with your measurements and the guide for the exact product. IPSO and KIPRUN provide different references; the same symbol—XS, S or M—does not guarantee the same fit.
| Retailer and line | Specific example | Published information | What to check |
|---|---|---|---|
| Sprinter · IPSO | IPSO Basic Women's Running Tights, ref. 0367663. | The product selector lists XS–XL and describes a close fit with soft, breathable fabric. | Open the product's size guide and use its current measurements; do not infer body measurements from letter sizes alone. |
| Decathlon · KIPRUN | KIPRUN Run 500 Confort, ref. 8892189. | The selector lists options from 2XS to 5XL with W/L variants; the page recommends your usual size and classifies the garment for mild weather. | Check the available combination and the guide for this exact item. Its advice does not apply to every KIPRUN legging. |
What this guide compares—and what it does not
This is a comparison of Sprinter and Decathlon as retailers, with one line from each to make the advice concrete: IPSO Basic Women's Running Tights (ref. 0367663) and KIPRUN Run 500 Confort (ref. 8892189). We do not present those two items as equivalent or extend their details to every garment at either store.
Product pages and selectors can change. The table reflects the pages checked on 5 October 2026; reopen the linked guide and confirm the reference, region and available option before buying. The hero image is illustrative editorial photography, not an official product photo.
Sprinter and IPSO: check the exact product guide
The IPSO Basic product page describes the tights as close-fitting, with soft, breathable fabric. The selector listed XS, S, M, L and XL when checked. That range describes this item on the page reviewed; it does not define all IPSO clothing or the full Sprinter catalogue.
Before choosing, open the “size guide” control on the product page and check which measurements it uses. If it asks for body measurements, take yours using its diagram. If it gives garment measurements, compare them with tights that fit you, laid flat without stretching. Do not mix body circumference with a flat garment width.
Stretch fabric does not mean you should accept uncomfortable pressure or assume one size will adapt to every body. Check the waist, hips and rise as you move; if the product page or selector changes, follow the current information for that item.
Decathlon and KIPRUN: separate size, length and fit
The KIPRUN Run 500 Confort page checked showed options from 2XS to 5XL and combinations with W/L codes. It also recommends your usual size for this item, lists three pockets and classifies it for mild weather. Exact size and length availability can vary; choose from the selector on that page rather than a generic conversion chart.
“Choose your usual size” is a product-specific note, not a conversion from IPSO to KIPRUN. Use it alongside the size guide and your measurements. If the selector offers different lengths, consider where you want the hem to sit as well as the waist and hip fit.
Measure your waist and hips before opening the charts
Use a flexible tape and follow the exact points shown by each retailer. As a practical starting point, record your waist and hip circumference; if the guide requests another measurement, such as inside leg, take that too. Keep the tape in contact with your body without pulling tight and note the centimetres, not just your usual label size.
To compare two garments laid flat, use the same method and do not stretch the fabric. A finished garment can measure differently from your body because its design may allow ease, support or compression. If you only find a body chart, choose from your body measurements; do not try to translate it into the measurements of an old pair of tights.
With running tights, pay attention to more than one point: a waistband that shifts, pressure at the hips or a rise that limits your stride can feel like a general sizing problem, but they are not always solved in the same way.
Do a simple movement check
If you can try the garment on and the return policy allows it, wear the tights with your usual underwear. Walk, do a comfortable squat and move your legs as you would while running. Check whether the waistband stays where you set it, whether the fabric pulls at the hips or rise, and whether the length works for you.
An at-home check does not replace product instructions, but it can help you notice pressure, slippage or excess fabric. Do not confuse “supportive” with “it should feel tight”; if you notice pain, tingling or restricted movement, revisit the size, pattern and exchange options.
If you are between sizes
First identify where the uncertainty is: waist, hips, rise or length. Then compare that measurement with the chart attached to the exact product. If the guide does not answer your question, check the manufacturer's notes or contact customer service; there is no reliable rule to size up or down that works across both retailers.
If your waist and hip measurements point to different options, see whether the store explains which to prioritise for that item and whether the waistband can be adjusted. The KIPRUN page checked mentions an elastic waist and drawcord; do not assume other models or IPSO use the same construction. For more context, read what to do between two sizes and why your size changes between brands.
Before you add them to your basket
- Confirm the retailer, line and exact product reference.
- Measure the points requested by that chart and use centimetres.
- Check whether the chart describes your body or the garment.
- Review the length and any options in the product selector.
- Treat “usual size” as a note for that item, not as a conversion.
- Check returns and test movement if you can.
- Save the product, chosen size and fit notes in SIZES.
A useful comparison is not “my IPSO is a medium, so KIPRUN must be too”. It is your measurement, each product's guide and how that specific cut feels. Save what works and your next purchase can build on real experience instead of a universal chart neither retailer promises.
Frequently asked questions
Do Sprinter and Decathlon running tights fit the same?
There is no universal conversion. Check the size guide for the exact garment at each retailer and compare the measurements each one requests.
Which products are used as examples?
IPSO Basic Women's Running Tights, reference 0367663, and KIPRUN Run 500 Confort, reference 8892189. They illustrate the product pages consulted and do not represent every Sprinter or Decathlon garment.
What size does Decathlon recommend for KIPRUN Run 500 Confort?
The product page consulted recommends your usual size for that item. Recheck the selector, guide and available options before buying.
What should I do if I am between sizes?
Identify whether the fit issue is at the waist, hips or length, use the exact product guide and test your movement. Do not size up automatically if the issue is only the length or hold.