Chest & Bust
Measure around the fullest part of the chest or bust while keeping the tape relaxed and parallel to the floor. This is the key reference for T-shirts, training tops, sports bras, hoodies, and jackets.
NexFit Wear Fit System
Size Guide
A refined sizing reference for performance T-shirts, training tops, sports bras, leggings, shorts, joggers, sweatpants, jackets, hoodies, sweatshirts, and workout sets. Use this guide to choose a clean athletic fit that supports movement without feeling restrictive.
3–5
Business day delivery across the United States.
30
Day free returns and exchanges for better fit confidence.
24/7
Support for order, sizing, and product questions.
Fit First
Choose the size that follows your body measurements first, then adjust by your preferred compression, coverage, and layering style.
Measurement Method
Measure Once, Choose With Confidence
For the most accurate result, measure over light clothing, keep the tape level, and avoid pulling the tape too tight. When between sizes, choose based on how you prefer your activewear to feel during movement.
Waist
Measure around the natural waistline, usually the narrowest point of the torso. Use this number for leggings, shorts, joggers, sweatpants, and fitted workout sets.
Hips
Measure around the fullest part of the hips and seat. This helps determine the right size for leggings, training shorts, joggers, and sweatpants without pulling across the body.
Inseam
Measure from the top of the inner leg down to your preferred hem point. This is especially useful for leggings, joggers, sweatpants, and full-length training sets.
Reference Charts
Body Measurements By Category
Measurements are listed in inches and designed as a practical guide for NexFit Wear products. Individual product pages may include fit notes when an item is intentionally oversized, slim, compressed, or relaxed.
Women’s Activewear
Tops, Bras, Leggings, Sets| Size | Bust | Waist | Hips | Recommended Fit |
|---|---|---|---|---|
| XS | 31–33 | 24–26 | 34–36 | Close, sculpted support |
| S | 34–35 | 27–28 | 37–38 | Smooth athletic fit |
| M | 36–38 | 29–31 | 39–41 | Balanced movement fit |
| L | 39–41 | 32–34 | 42–44 | Comfortable active fit |
| XL | 42–44 | 35–37 | 45–47 | Easy coverage fit |
| XXL | 45–48 | 38–41 | 48–51 | Relaxed performance fit |
Men’s Activewear
T-Shirts, Hoodies, Joggers| Size | Chest | Waist | Hips | Recommended Fit |
|---|---|---|---|---|
| S | 35–37 | 29–31 | 35–37 | Streamlined training fit |
| M | 38–40 | 32–34 | 38–40 | Classic athletic fit |
| L | 41–43 | 35–37 | 41–43 | Room for movement |
| XL | 44–46 | 38–40 | 44–46 | Relaxed active fit |
| XXL | 47–50 | 41–44 | 47–50 | Generous comfort fit |
| 3XL | 51–54 | 45–48 | 51–54 | Full ease fit |
Bottoms Length Guide
Leggings, Shorts, Joggers| Style | Short | Regular | Long | Best For |
|---|---|---|---|---|
| Training Shorts | 4–5 Inseam | 6–7 Inseam | 8–9 Inseam | Running, gym, warm-weather training |
| Leggings | 23–25 Inseam | 26–28 Inseam | 29–31 Inseam | Studio, strength, everyday movement |
| Joggers | 27–28 Inseam | 29–30 Inseam | 31–32 Inseam | Training, travel, recovery wear |
| Sweatpants | 28–29 Inseam | 30–31 Inseam | 32–33 Inseam | Warmups, rest days, layering |
Fit Intelligence
Choose By Movement, Not Only Size
Different training pieces are designed to perform differently. Use the notes below to decide whether you should stay true to size, size up for layering, or size down for a more compressive feel.
Sports Bras & Leggings
Choose your measured size for supportive compression. Size up if you prefer softer pressure at the waistband, underband, or thigh.
T-Shirts & Tops
Stay true to size for a clean athletic shape. Size up if you prefer extra airflow, shoulder room, or a relaxed gym-to-street look.
Jackets & Hoodies
Choose your usual size for a polished outer layer. Size up if wearing over thick sweatshirts, thermal tops, or multiple base layers.
Joggers & Sweatpants
For a tapered athletic silhouette, stay true to size. For a roomier recovery fit, choose one size up while checking the waist range.
Between Two Sizes
If your measurements sit between two sizes, choose the smaller size for a closer training fit and the larger size for comfort, layering, or everyday wear. For high-stretch items, body measurements are more reliable than garment measurements.
Shape Retention
Care That Protects Fit
Performance fabrics hold their shape best when cared for with low heat, gentle washing, and minimal friction. Proper care helps maintain compression, stretch recovery, and surface finish.
Wash Cold
Use cold water with similar colors. Turn garments inside out to protect outer surfaces, printed details, and smooth fabric finishes.
Avoid High Heat
Air dry when possible or tumble dry low. High heat can weaken stretch fibers and may reduce the long-term recovery of performance fabrics.
Skip Fabric Softener
Fabric softener can coat technical fibers and reduce moisture-wicking performance. Use a mild detergent for a cleaner athletic feel.
Close Zippers
Before washing jackets, hoodies, and joggers with hardware, close zippers and fasten closures to reduce abrasion inside the wash cycle.
Store Flat Or Folded
Fold leggings, sports bras, and compression pieces neatly instead of hanging them for long periods, which can stretch key support areas.
Refresh Between Wears
Let activewear fully dry before placing it in a hamper or drawer. This keeps fabric fresher and helps preserve its smooth hand feel.
Fit Questions
Size Guide FAQ
These answers are designed to help you make a confident size choice before ordering. All FAQ items are closed by default for a clean browsing experience.
Should I size up or down for a more relaxed fit?
Choose one size up if you prefer more room through the chest, waist, hips, or thighs. This is especially helpful for hoodies, sweatshirts, joggers, sweatpants, and layering pieces.
Should sports bras and leggings feel tighter than regular clothing?
Yes, they may feel more supportive than casual clothing because they are designed for movement and stretch recovery. The fit should feel secure, but it should not restrict breathing or create sharp pressure points.
What should I do if my top and bottom sizes are different?
For workout sets, choose the size that best fits the area where you need the most comfort. If a set includes both fitted and relaxed pieces, use your bust or chest measurement for the top and waist or hip measurement for the bottom.
Do hoodies and jackets allow room for layering?
Most hoodies and training jackets are intended to layer over active tops. If you plan to wear them over thicker sweatshirts or cold-weather base layers, sizing up can create a more comfortable fit.
Can I exchange an item if the fit is not right?
Yes. NexFit Wear offers free returns and exchanges within 30 days. For sizing help before or after ordering, use the single contact link at the bottom of this page.
Need Personal Fit Help?
Send your measurements and the product name for a clearer size recommendation.
Our support team is available 24/7. Include your chest or bust, waist, hips, height, usual size, and preferred fit so we can help you choose more confidently.