Under Armour tops and bottoms often leave new shoppers wondering does Under Armour run big or small. The brand uses a unisex cut in many core pieces, which can feel roomier than slim fitted lines but tighter than relaxed oversized styles depending on the category.
Fit expectations vary by garment type, fabric blend, and construction details like ribbing and seaming. Understanding these variables helps you choose the right size without surprises at checkout or on laundry day.
| Garment Category | Typical Fit | Sizing Tendency | Recommended Action |
|---|---|---|---|
| T-Shirts & Henleys | Straight, slightly relaxed torso | Runs a touch large in chest and length | Size down for regular fit, stay true to size for relaxed |
| Polo Shirts | Tailored with defined shoulders | Runs true to size in chest, modest length | Match your usual shirt size |
| Hoodies & Sweatshirts | Boxy with roomy sleeve girth | Runs large, especially across shoulders | Size down for a streamlined layer |
| Leggings & Pants | Ankle defining, firm hold | Runs small in hip and thigh | Size up for high compression or if between sizes |
| Performance Jackets | Articulated sleeves, athletic cut | Runs small through torso, sleeves long | Size up for layering, stay true for solo wear |
Tops and T-Shirts Fit Behavior
Standard Cotton and Blended Tees
Many everyday Under Armour tees run big in the chest and hem while maintaining moderate sleeve length. The relaxed shoulder seam and slightly roomy torso are intentional to allow freedom of movement during training or casual wear.
If you prefer a streamlined silhouette, sizing down often corrects the extra fabric across the midsection without making the arms feel tight. Consider your layering needs; a slightly larger tee can comfortably slip over a lightweight jacket or hoodie.
Polos and Performance Knits
Polo shirts tend to fit more true to size with a tailored yet comfortable range across the chest and waist. Under Armour polos hold their shape through repeated wear, so you experience less variation than with basic knit tees.
Performance knits designed for training often use bonded seams and contoured panels that follow your natural lines. Even in these technical tops, you may still find they run slightly large in the body, so comparing your measurements to the brand size chart is a reliable strategy.
Bottoms, Leggings, and Pants Sizing
Leggings and Compressive Styles
Under Armour leggings are known for a firm, compressive feel, and they frequently run small in the hips and thighs. The stretch fabric moves with you, but initial pull can feel tighter if you choose your regular jean size.
For high-intensity workouts or long wear, sizing up can improve comfort without sacrificing support. Check the rise and waist conversion charts if you switch between standard and tall sizing options.
Track Pants and Training Pants
Track pants often feature a relaxed seat and slightly cropped ankle, while training pants prioritize a snug hem that stays in place. Both styles may feel generous across the seat, leading you to size down for a cleaner athletic line.
When in doubt, review the product details for elastic drawcords, adjustable waist tabs, or internal drawstrings that let you fine-tune the fit after trying them on.
Jackets, Outerwear, and Layering Fit
Lightweight Shells and Softshells
Performance jackets from Under Armour are tailored with an athletic cut that traces the shoulder and torso. Expect them to run small through the body, especially if you layer technical base pieces beneath.
Planning for midweight insulation or heavy layering? Size up to preserve mobility and allow a full range of motion without pulling at the zipper or restricting your arms.
Hoodies and Casual Outerwear
Hoodies are among the items where Under Armour most clearly runs large, with generous sleeve girth and a boxy shape that accommodates layering.
For a modern, streamlined look, sizing down creates a more proportionate appearance while still leaving room for a thin midlayer when the weather turns colder.
Key Takeaways for Choosing Under Armour Fit
- Use the size chart and your measurements instead of relying on your usual clothing size.
- For everyday tees and hoodies, consider sizing down for a streamlined look or sizing up for extra layering room.
- Size up in leggings if you need full range of motion and prefer a less compressive feel.
- Check garment specific notes, as polos tend to fit truer while hoodies and outerwear run larger.
- Always review return policies so you can exchange or adjust sizing without hassle.
FAQ
Reader questions
Do Under Armour tees shrink after washing?
They can experience slight shrinkage, especially if machine dried on high heat. Air drying or using a low heat setting helps preserve the intended size and fabric integrity.
Should I size up for tall lengths in Under Armour pants?
Only adjust the length if your waist size matches the regular fit; tall sizing modifies the inseam without changing the waist or hip dimensions.
Will a size down in Under Armour leggings make them too tight at the ankle?
It may, because the fabric is designed for compression. If you are between sizes, consider the waist rise and intended use before choosing a smaller size.
Do technical jackets from Under Armour fit the same as everyday hoodies?
No, technical jackets are cut more narrowly through the torso and may feel snugger than the roomier hoodies even if you match the labeled size.