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Under Armour Women's Rival Core Short Sleeve T Shirt

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Availability: Only 3 left in stock, order soon!
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Arrives Monday, Aug 24
Order within 16 hours and 32 minutes
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Size: Medium


Color: (025) Castlerock / / Black


Description

Under Armour’s mission is simple: to make you better. That means if you set a goal, we’ll help you crush it. We do that with performance innovation and game-changing shoes, shirts, and digital tools that push the limits of what you thought possible.

Package Dimensions ‏ : ‎ 12 x 8 x 0.5 inches; 1.4 Pounds


Item model number ‏ : ‎ 1383648


Department ‏ : ‎ womens


Date First Available ‏ : ‎ July 15, 2024


Manufacturer ‏ : ‎ Under Armour


Best Sellers Rank: #33,699 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #149 in Women's Activewear T-Shirts


#149 in Women's Activewear T-Shirts:


Customer Reviews: 4.3 4.3 out of 5 stars (127)


Color: (025) Castlerock / / Black


Fit Type: Regular Fit


Style Name: Rival Core Short Sleeve T Shirt


Neck Style: Crew Neck


Sleeve Type: Short Sleeve


Shirt Form Type: T-Shirt


Sport Type: Workout and Training


character: Sports


collar-type: T shirt


Pattern: Solid


top-style: T-Shirt


Seasons: Spring/Summer


Apparel Closure Type: Button


Cuff Type: No Cuff


Apparel Occasion and Lifestyle: Casual


Animal Theme: giraffe


Occasion Type: Birthday


Collection Name: Rival Core


Back Style: T Back


Brand Name: Under Armour


Model Name: Rival Core Short Sleeve T Shirt


Style Number: 1383648


Unit Count: 1.0 Count


Import Designation: Imported


UPC: 197777958495


Global Trade Identification Number: 95


Number of Items: 1


Manufacturer Part Number: 1383648-025


Age Range Description: Adult


Manufacturer: Under Armour


Sleeve Length Description: Short Sleeve


Fit to Size Sentiment: Positive


Material Type: Polyester


Fabric Type: 57% Cotton, 38% Polyester, 5% Elastane


Product Care Instructions: Machine Wash


Fabric Stretchability: Stretchable


Apparel Fabric Weight Class: Lightweight


Apparel Fabric Stretch: High Stretch


Item Length Description: Standard Length


Garment Size Country: United States


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Aug 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Good
Size: Large Color: (001) Black / / White
It’s really cute, I’m 5’0 and 140 pounds, and got a large for an oversized. A medium would’ve also been oversized. Great and comfy.
Reviewed in the United States on April 15, 2026 by j fernandez

  • Just what I wanted
Size: XX-Large Color: (001) Black / / White
a gift great
Reviewed in the United States on February 28, 2026 by Amazon Customer

  • Made of cotton
Size: Large Color: (349) Silica Green / / White
Bought a size larger for a relaxed fit, love that it’s mostly cotton. Hard to find a cotton tee from an activewear brand anymore. I bought 2.
Reviewed in the United States on July 26, 2025 by Susan M Goodwin

  • Great fit!
Size: X-Large Color: (025) Castlerock / / Black
Excellent fit, true to size. Great quality of Tshirt. Color as per image projected.
Reviewed in the United States on August 31, 2025 by Shalaka R.

  • Not as pictured
Size: X-Large Color: (498) Wham Blue / / Wham Blue
These shirts are different then pictured. The logos in the pics match the shirt color, but they're actually white logos. I specifically bought these because I liked the muted logos. Just want others to be aware that the pictures on the listing are misleading.
Reviewed in the United States on April 23, 2026 by Amazon Customer

  • Nice loose fitting tee
Size: Medium Color: (025) Castlerock / / Black
Nice loose fit! True to size. Have 3 colors.
Reviewed in the United States on May 26, 2025 by SR

  • Okay
Size: Medium Color: (349) Silica Green / / White
Didn't like this material as much as the previous ones I have purchased in different colors. Feels a bit thicker .
Reviewed in the United States on January 6, 2026 by Carol

  • Delivery problem
Size: Medium Color: (100) White / / Black
the shirt is fine but the driver left the clear package which showed the product on the front step. i had given instructions to leave package inside screen door. So lucky it wasn't stolen.
Reviewed in the United States on April 14, 2026 by William J. Gough

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