How To Measure Yourself For The Perfect Fit
Finding the right size starts with knowing your measurements. Different brands can fit slightly differently, so taking a few simple measurements will help you choose the best size when shopping with StyleSwap.
For the most accurate results, measure yourself while wearing light clothing and keep the measuring tape flat against your body without pulling it too tight.
Chest Measurement
Your chest measurement is one of the most important measurements when choosing hoodies, jackets, t-shirts and sweatshirts.
How to measure:
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Wrap the measuring tape around the fullest part of your chest.
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Keep the tape level across your back and under your arms.
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Make sure the tape is comfortable and not too tight.
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Take a relaxed breath before recording your measurement.
Tip: If you prefer a more oversized streetwear fit, consider choosing a size up.
Waist Measurement
Your waist measurement helps you find the best fit for joggers, shorts and trousers.
How to measure:
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Wrap the measuring tape around your natural waistline.
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Keep the tape slightly loose for comfort.
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Measure around the area where your waistband would normally sit.
Tip: For a relaxed everyday fit, choose the size that matches your measurements rather than sizing down.
Our Fit Advice
At StyleSwap, we stock popular activewear and streetwear brands including Nike, ASICS, Berghaus and Under Armour. Each brand can have slightly different fits, so we recommend checking both your measurements and the individual product description before ordering.
SIZE GUIDE:
Brand-by-Brand Fit Notes
Every brand has its own approach to sizing and fit. While most pieces are designed to fit true to size, certain collections and styles can feel different depending on the cut, material, and intended use.
Use these brand notes alongside our size charts to help you choose the perfect fit.
Nike — True To Size & Reliable Fit
Nike is known for its consistent sizing across its everyday clothing range. Most Nike t-shirts, hoodies, tracksuits and lifestyle pieces follow a standard athletic cut that fits as expected.
Fit guide:
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Generally true to size.
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Standard athletic shape with a comfortable everyday fit.
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No need to size up or down for most styles.
StyleSwap’s recommendation:
Choose your usual size for a regular fit. If you prefer the oversized streetwear look, consider sizing up one size.
ASICS — Consistent Everyday Comfort
ASICS activewear offers a reliable and comfortable fit across its clothing range. Similar to its footwear reputation, ASICS focuses on consistency, making sizing straightforward across t-shirts, shorts, sweatshirts and 1/4 zips.
Fit guide:
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Generally true to size.
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Comfortable everyday fit.
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Designed for easy movement and casual styling.
StyleSwap’s recommendation:
Stick with your usual size for the intended fit. Size up if you prefer a more relaxed, oversized appearance.
Under Armour — Depends On The Style
Under Armour sizing can vary depending on the type of product. Some pieces are designed with a closer athletic fit, while others offer a more relaxed everyday feel.
Fit guide:
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Most styles are true to size.
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Compression pieces are designed to fit close to the body - this is intentional.
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Tracksuits, hoodies and relaxed styles usually offer a roomier fit.
StyleSwap’s recommendation:
For a fitted look, choose your normal size. If you are between sizes or prefer a relaxed streetwear fit, we recommend sizing up.
Berghaus — Check The Fit Category
Berghaus sizing can vary more than other brands because its clothing is designed around outdoor performance, layering and movement.
Many Berghaus products fall into one of three fit categories:
Technical Fit
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Closer fitting design.
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Built for freedom of movement.
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Designed to work with your body during activity.
Active Fit
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Balanced everyday fit.
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Not too tight and not too loose.
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A versatile option for casual wear and outdoor use.
Relaxed Fit
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More room through the body.
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Allows additional layers underneath.
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Popular for the oversized outdoor streetwear style.
StyleSwap’s recommendation:
Always check the product description before ordering. Two Berghaus items with the same labelled size can feel different depending on the fit category.
Trailberg — True To Size & Consistent Fit
Trailberg follows a similar approach to other trail and running-inspired activewear brands, offering a consistent and comfortable everyday fit.
Fit guide:
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Generally true to size.
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Designed for comfort and movement.
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Works well as part of modern activewear and streetwear outfits.
StyleSwap’s recommendation:
Choose your usual size for the intended fit, or size up for a more relaxed look.
Our Final Fit Tip
If you are unsure between two sizes, think about the style you want:
Regular everyday fit: Choose your usual size.
Relaxed/oversized streetwear fit: Go one size up.
Layering jackets or outdoor pieces: Consider extra room for additional layers.
At StyleSwap, we want every item to fit exactly how you want it to — whether you're building a casual everyday outfit or creating the perfect activewear-inspired look.