Does Under Armour run small?

    Runs small
    Quick Answer

    Does Under Armour run small, quick answer

    Yes. Under Armour runs small.

    Yes, Under Armour runs small. Most shoppers size up one across tops, dresses, and structured outerwear. Stretch knits and relaxed silhouettes are more forgiving.

    Need sizing help for Under Armour?

    How Under Armour fits

    Under Armour runs small, size up 0.5 in most categories

    Category-by-category sizing

    Tops
    Runs small

    Compression and HeatGear tops run very small. Loose-fit styles are closer to true to size. Size up 1 for a relaxed fit.

    Bottoms
    Runs small

    Athletic shorts and joggers run small in the waist. Size up 1. Storm pants are slightly more generous.

    Outerwear
    Runs small

    Storm and ColdGear jackets run small through the chest and arms. Size up 1 for layering room.

    FAQ

    Does Under Armour run small?

    Yes, Under Armour runs small. Most shoppers size up one across tops, dresses, and structured outerwear. Stretch knits and relaxed silhouettes are more forgiving.

    Does Under Armour run small in tops?

    Compression and HeatGear tops run very small. Loose-fit styles are closer to true to size. Size up 1 for a relaxed fit.

    Does Under Armour run small in bottoms?

    Athletic shorts and joggers run small in the waist. Size up 1. Storm pants are slightly more generous.

    Does Under Armour run small in outerwear?

    Storm and ColdGear jackets run small through the chest and arms. Size up 1 for layering room.

    Should I size up in Under Armour?

    Most shoppers size up one in Under Armour, particularly in fitted tops, structured outerwear, and rigid (non-stretch) bottoms. Stretch fabrics absorb the small-fit tendency and usually do not need sizing up.

    How does Under Armour sizing compare to other brands?

    In the same category, Nike fits true to size, Lululemon fits true to size, Adidas fits true to size. ThisFits has full brand-vs-brand comparisons at /brands/compare for direct sizing translations.

    What's the best way to find my size in Under Armour?

    Paste a Under Armour product URL into the ThisFits fit checker. The recommendation accounts for the brand's known tendency (runs small), the specific category, and your saved measurements, so you get a per-product answer instead of a generic "size up" rule.

    Will this fit?

    Paste a Under Armour product link for a per-item size recommendation. Full Under Armour brand page.