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The Arm Day Bra by Swinn (Left Chest)

Size Guide
Neon Yellow
Light Blue
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It's ARM DAY, Baby! Put this bra on and break Arnold Schwarzenegger's PR from 1968.

*Model is size 32A and is wearing a Size XS.

  • Limited quantities
  • Silky, Cool, Compression fabric worn by professional athletes and dancers
  • Ink will never crack, peel, or fade
  • Soft, Custom designed and printed 1.5" Jacquard Elastic 
  • 80% Nylon/20% Spandex 
  • Double layered, soft, moisture wicking fabric that keeps you dry and odorless
  • Compression style sports bra, true to size
  • Racer back bra style
  • Designed with the utmost care in Austin,TX. Made in USA

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Bra Sizing

We recommend choosing your Swinn bra size based on the width of your normal bra band, regardless of your cup size.  We have had the most consistency in perfect fits using this method.  Some women prefer to go down a size to ensure that the bra is higher in compression.  For example, choosing a size Small when you're a 36C because you like a tighter fit.  If you have any questions or would like our advice on sizing, please email us at  We are here to help!! :)