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Arena
Arena Women's Solid Pro Back One Piece Swimsuit - Blue Cosmo - 38
−50%
Clothes · arena

A swimsuit built for laps, not lounging

Arena Women's Solid Pro Back One Piece Swimsuit - Blue Cosmo - 38

An Arena women's solid Pro Back one-piece in Blue Cosmo — for swimmers who want a training suit that holds up in the pool.

Deal score 5.1 · Good deal
$37.00$74.00 arena's regular price

You save $37.00 at arena

Deal.ai's agents found this deal on November 4. The store may have changed its price since.

Why it's a great deal

  • arena lists its regular price at $74.00: 50% off by its own figures
  • Rated 4.0 out of 5 by 21 buyers
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Every store we checked

  • arenaNew

    In stock

    $37.00Observed at 10:18 AM
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  • Kiefer AquaticsNew

    Availability unknown

    $55.50Observed at 10:18 AM
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Price history and every store's price →

Reading arena’s product page for the details…

Specs

Cup Size
A, F
Material
Polyester
Type
One-piece
Recycled Materials
Yes
Size Type
Regular

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About the Arena Women's Solid Pro Back One Piece Swimsuit - Blue Cosmo - 38

The Arena Solid Pro Back is a one-piece training swimsuit in Arena's chlorine-resistant polyester blend, made partly from recycled materials. The Pro Back straps sit wide and cross-free, which keeps the shoulders free for long freestyle sets. At $37 at Arena as of November 4, 2026, it sits at the low end of what this suit has cost recently, and two stores carry it new.

Best forFrequent pool and lap swimmersSwimmers who want a plain, logo-light suitTraining several times a weekBuyers who prefer recycled fabric
Pros
  • Chlorine-resistant polyester holds color longer than elastane-heavy suits
  • Pro Back straps stay put and free the shoulders for strokes
  • Recycled content in the fabric
  • Simple solid color that hides wear
  • Low price for a branded training suit
Cons

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More from Arena

  • A
    Arena Women's Solid Pro Back One Piece Swimsuit
    Arena Women's Solid Pro Back One Piece Swimsuit
Polyester feels firmer and less stretchy than lycra blends
  • Thin straps can dig in on long sets
  • Limited cup sizing and no built-in bra support
  • Solid color only, no print options

    • What reviewers say

    Rated 4 out of 5 from 21 ratings, the suit is generally liked as a durable everyday trainer. Owners mostly praise the fit and how well it holds up in chlorinated water.

    Pros
    • Holds shape and color through regular pool use
    • Snug, secure fit on the Pro Back straps
    • Good value for a training suit
    Cons
    • Fabric feels stiff at first
    • Some find the sizing runs small

    Questions and answers

    Is the Arena Solid Pro Back worth it for regular lap swimming?
    Yes, if you swim several times a week. The polyester blend resists chlorine better than stretch-heavy suits, and at $37 at Arena as of November 4, 2026 it costs less than most technical trainers.
    How does it compare with Arena's other training suits?
    The Pro Back cut has wide, non-crossing straps and a moderate leg, so it suits distance freestyle. Arena's thinner-strap and cross-back models give more freedom but less support.
    Does it have a built-in bra or bust support?
    No. It is a single-layer suit with no shelf bra or cups, so it suits smaller cup sizes best. The listed cup range runs A to F, but larger cups may want a suit with more structure.
    How should I size it?
    Arena sizing runs close to the body, and some owners report it fits small. Check Arena's size chart against your measurements rather than your usual clothing size.
    When is the price lowest?
    Training suits usually drop at the end of summer and during pre-season sales. The current $37 at Arena as of November 4, 2026 is already near the bottom of its recent range.