Quick answer: Whether a tracksuit runs small depends on the brand and fabric, not tracksuits as a category. Cotton-heavy tracksuits tend to shrink slightly after washing, while polyester-blend and fleece styles usually hold their size better. Checking the brand’s specific size guide and recent buyer reviews is more reliable than assuming a standard fit.
“Does this tracksuit run small?” is one of the most common questions before buying online, since tracksuit sizing varies far more than most other clothing categories. Here is how to check before you order, and what to do if it arrives too tight.
Why Tracksuit Sizing Varies So Much
Tracksuits are cut differently depending on whether they are designed for a relaxed streetwear look or a closer athletic fit. Streetwear tracksuits are often cut oversized on purpose, while performance or gym-focused tracksuits tend to run closer to the body. Fabric composition adds another variable, since cotton-rich fabrics can shrink after the first few washes, while polyester and elastane blends generally keep their original shape.
Tracksuit Fit Types: Slim, Regular, Relaxed and Oversized
The words on the product page matter as much as the size label. A tracksuit described as slim fit in your usual size will feel very different from one described as relaxed fit in the same size. Learn the four common fit types before you order, and you will know whether to stay true to size or adjust.
| Fit Type | How It Sits | Best For | Sizing Tip |
|---|---|---|---|
| Slim | Close to the body through the chest, waist and leg | Gym sessions, running and a neat athletic look | Stay true to size, or size up if you prefer room to move |
| Regular | Straight cut with comfortable ease through the body | Everyday wear, travel and light training | Stay true to size in most cases |
| Relaxed | Looser through the chest and leg with a dropped shoulder or tapered ankle | Lounging, casual days out and layering over a tee | Stay true to size for the intended relaxed look |
| Oversized | Deliberately roomy all over, often with a long body and wide leg | Streetwear styling and a bold, layered look | Stay true to size for the oversized effect, or size down for a neater fit |
Check the product photos as well as the fit description. Look at where the hoodie hem sits on the model, how the joggers gather at the ankle and whether the shoulders sit on the shoulder or drop below it. A product page that shows the model height and the size they wear gives you a useful comparison point, especially when you shop online.
Matching the Top and the Bottom
Many tracksuits are sold as a set, which means the top and the bottom share one size. If your top and bottom sizes usually differ, check whether the retailer sells the pieces separately. A set can leave the hoodie fitting well while the joggers feel tight at the waist, or the other way round. Separates cost a little more effort to order, but they solve the most common tracksuit fit complaint.
What “Runs Small” Usually Means in Practice
Reviews that say a tracksuit runs small rarely mean the whole garment is small. The tightness usually shows up in one place first. Knowing where to check helps you decide whether to size up or to choose a different fit type instead.
- Chest and shoulders: the hoodie pulls across the chest or the shoulder seams sit too far in. This is the most common complaint on slim fit styles.
- Body length: the hoodie hem rides up when you raise your arms, or the joggers sit short at the ankle. Taller buyers notice this first.
- Waist and hips: the jogger waistband digs in, or the seat feels tight when you sit down. A drawstring waist helps here, since it adjusts more than an elastic waist alone.
- Leg and thigh: tapered joggers feel tight through the thigh even when the waist fits. Relaxed and straight leg cuts give more room here.
- Sleeve length: the cuffs pull back from the wrist when you reach forward. Long sleeve styles vary widely, so check the listed sleeve measurement when it is given.
General patterns are useful, but they are not rules. Sportswear brands tend to cut closer to the body than casual fashion brands, and performance ranges tend to run closer than streetwear ranges from the same label. That is why the brand size chart and recent reviews matter more than a general claim about tracksuits running small. Compare the garment measurements on the chart with a tracksuit you already own and like, and measure the chest, length and waist rather than trusting the letter on the label.
If you sit between two sizes, the right choice depends on the fit type. For a slim or performance tracksuit, take the larger size so you keep freedom of movement. For a relaxed or oversized tracksuit, take the smaller size if you want a neater shape, or take your usual size if you want the full relaxed look.
How to Check Before You Buy
| Step | Why It Matters |
|---|---|
| Check the brand’s own size chart, not a generic one | Sizing conventions differ significantly between brands, so brand-specific charts are more reliable. |
| Read recent reviews mentioning fit | Reviews often flag if a style runs small, large, or true to size. |
| Check the fabric composition | Cotton-heavy fabrics are more likely to shrink after washing, while polyester and elastane blends hold their shape better. |
| Compare to a tracksuit you already own and like the fit of | Measurements are more reliable than labels alone. |
Fabric and Shrinkage Guide: Cotton vs Polyester Blends
Fabric decides how a tracksuit feels, how it washes and whether it keeps its size. The label inside the garment tells you the blend, and a quick read before you buy can save a return later.
| Fabric | Feel and Fit | Shrinkage Risk | Care Notes |
|---|---|---|---|
| Cotton rich (high cotton content) | Soft and breathable, with a natural drape | Higher, especially after a hot wash or tumble dry | Wash cool and air dry to hold the size |
| Polyester blend | Smooth and light, with more stretch and shape retention | Low, holds its size well through washing | Wash cool, avoid high dryer heat |
| Cotton and polyester mix | Soft like cotton with better shape hold from the polyester | Moderate, less than pure cotton | Wash cool and reshape while damp |
| Fleece (brushed lining) | Warm and cosy, thicker through the body and leg | Low to moderate, mostly from heat rather than water | Air dry, since high heat can flatten the brushed lining |
| Elastane mix | Stretchy and close fitting, good for movement | Low, but heat weakens the stretch over time | Avoid fabric softener and high dryer heat |
How to Wash a Tracksuit Without Shrinking It
- Read the care label first, and follow it rather than your usual wash routine.
- Wash on a cool cycle with a mild detergent, and turn the tracksuit inside out to protect the outer surface.
- Skip the tumble dryer when you can. Air dry flat or on a hanger away from direct heat.
- Reshape the hoodie and joggers while they are still damp, smoothing the cuffs and hems back into shape.
- Do not iron directly onto printed logos or designs, since heat can crack the print.
Expect a small amount of shrinkage on a cotton rich tracksuit after the first wash, even with careful washing. If the fit feels snug when it arrives, a hot wash will only make it tighter, so try the tracksuit on first and exchange it if you are unsure. For a tracksuit you plan to wear for training, a polyester blend holds its size better through frequent washing, while a cotton rich style suits relaxed everyday wear where a softer feel matters more.
What to Do If It Arrives Too Small
- Check the retailer’s return or exchange policy before removing tags, since most allow a straight exchange or refund while the item is unworn.
- Avoid washing on a hot cycle if there is any chance of exchanging, since this can void returns and shrink the fabric further.
- For a marginal fit, cotton-blend joggers and hoodies can sometimes be stretched slightly through wear, while polyester-heavy styles tend to hold their shape.
Expert Insight
Stylists often recommend sizing up by one size for tracksuits intended for layering or a relaxed fit, since the intended look already includes extra room. For athletic-fit tracksuits, staying true to size is usually better, since sizing up can leave the joggers too long and the hoodie too loose in the shoulders.
Frequently Asked Questions
Do cotton tracksuits shrink after washing? Cotton-heavy tracksuits can shrink slightly after the first few washes, especially if washed hot or tumble dried. Washing cold and air drying helps preserve the original size.
Should you size up for a streetwear-style tracksuit? For oversized or streetwear styles, staying true to size usually achieves the intended look, since they are already cut roomy. Sizing up further can make the joggers too long and the hoodie too shapeless.
More Questions About Tracksuit Sizing
Do tracksuits from different brands fit the same?
No. Sizing varies widely between brands, and even between ranges from the same brand. Always check the size chart for the exact style you are buying, and compare the garment measurements with a tracksuit you already own.
Should the hoodie and joggers be the same size?
Not always. If your top and bottom sizes differ, look for separates rather than a fixed set. Separates let you match each piece to your body instead of settling for a compromise fit.
Will a tracksuit stretch out with wear?
Cotton rich styles can relax a little with wear, especially around the waist and knees, while polyester blends tend to hold their shape. Do not rely on stretching to fix a tracksuit that feels tight when new. A marginal fit may ease slightly, but a clearly small size will not become comfortable.
For more on choosing activewear that fits well, see our guide to choosing the right sports bra, or browse our gym set colour guide.
About the Author: This guide was written by Ellen Stevens, Founder & Editor at Fashion Effects, who researches fit and sizing across activewear and streetwear to help readers order with more confidence.