Model Info
Best Seller

Arena Women's Powerskin ST 2.0 Open Back Tech Suit Swimsuit

From $111.99 - $140.00
Price Match Guarantee
Aquamarine Deep Red Fuchsia Navy Purple Black
Add to cart
The Arena Women's Powerskin ST 2.0 Open Back Tech Suit Swimsuit features a new ergonomic construction for enhanced core support,... Read More
SKU: 2A898 Product Code: 8157877

Product Details

  • Got a Question?

    Ask here!

    The Arena Women's Powerskin ST 2.0 Open Back Tech Suit Swimsuit features a new ergonomic construction for enhanced core support, body lift, stability, and comfort, this tech suit helps swimmers keep optimum shape in the water.

    Click HERE to learn more about the new USA Swimming rule regarding the 12 & under compliant racing suit.


    • FINA approved
    • U12 compliant
    • Racerback with thick straps
    • New ergonomic construction increases: Core support, body lift, stability, and comfort
    • Helps swimmers keep optimum shape in the water
    • Extra reinforced shoulder straps enhances upper back comfort and durability
    • Flatlock seams provide a "perfect fit" feel
    • Championship Fit: - Technical swimwear with maximum compression and the least amount of drag for races and competitions


    • Fabric: 71% Polyamide, 29% Elastane
    • Care: Hand wash cold, lay flat to dry
    • Sun Protection: UPF 50+
    • Chlorine Resistant: Yes
    • Country of Origin: Imported

    Click HERE to learn more about the new USA Swimming rule regarding the 12 & under compliant racing suit.

Top Neck to Knee Tech Suits From ARENA

Questions & Answers

Need an answer fast? Contact our customer service team.


Please let us know what kind of issue this is:
  • {{flag.text}}


  • 4.5 Review Stars (35 Reviews)

    Write A Review

    See all 35 customer reviews
  • 3/17/2021 Great 12 & Under runs big

    4 Review Stars By Not 'girl' sizing

    This is a great 12 & Under competition suit. Although it's 12 & Under, be aware that it is a woman's suit so plan accordingly with size. My girl practices in a 26 and would need a 22 in this suit.

    Not 'girl' sizing
    SLC, UT

    Fit: Feels too big

  • 11/28/2018 First Kneeskin

    5 Review Stars By Ellen

    This is the first kneeskin I have purchased for my daughter.  She is about 5'2" 105lbs and the size 22 fit great.  She is so excited to wear it.  I also love the tips that came with the suit.  I never would have thought to wear dollar store gloves to put it on without snagging it with a fingernail.  Fabulous purchase!


    Fit: Feels true to size

  • 3/13/2021 5 star tech suit

    5 Review Stars By Alli

    I bought this for my 10 year old daughter.  She’s 5’ tall and 96 lbs.  We bought a women’s size 22 and it was perfect.  It wasn’t too tight to where it limited her movement, but was compressing like it should be.  There was no puckering at the top of the suit above the chest when she put her arms in a streamline position.  There was no gap around the sides on the back where the opening is.  She tried on 3 brands of 12 & under compliant kneeskin tech suits.  The Arena was by far the most comfortable.  The Speedo Vanquisher was comfortable everywhere except her legs where the leg openings are.  They were too tight and no rubber grippers at the bottom.  The TYR Thresher was comfortable except for the straps.  They were the worst out of all of them that she tried on and there was a little gap around the sides on the back where the opening is.  She was able to put the Arena suit on by herself in about 10 minutes.  Be sure to rinse the suit with cold water after each use and let it air dry on a flat surface.  Surprisingly, the suit took a while to dry completely.  Be sure to clip your nails and use the pads of your fingers when moving the fabric up, not your fingertips.  We were in a time crunch and did the overnight shipping.  It was delivered the next day as promised.  My daughter dropped 11 seconds in her 200 IM, 3 seconds in her 100 back, 2 seconds in her 100 free, 1 second in her 50 free and 1 second in her 100 breast.  Not sure if it was a mental thing or the tech suit or both.  Either way, she dropped time.

    Southern IN

  • 7/29/2019 Exceeded my expectations!

    4 Review Stars By Alibaba

    I am a masters swimmer who competes a handful of times per year.  I usually race in Speedo, but decided to try the Arena Powerskin since my son loved his Arena suit.  My biggest concern was that I was going to have water rush down the top of my suit and possibly the bottom with every flip turn, but I was pleasantly surprised that even after racing a 1500m free in the suit that I had no issues!  And, for the price, the Powerskin is a much better option than the more expensive suits.

    Walnut Creek, CA

    Fit: Feels true to size

  • 11/10/2020 Great Suit

    5 Review Stars By WarEagleMom

    This is my daughter’s favorite racing suit. Fits perfectly. This is the 3rd Arena tech suit she has bought. Doesn’t wear any other brand of tech suit

    Auburn Al

  • 7/5/2019 Long enough!

    4 Review Stars By Long Torso swimmer

    I picked the Arena because I have a particularly long "Torso Loop" and it was the only brand whose size chart had something supposedly long enough for me. I had to return the initial size I tried because I could not get it up to and over my shoulders (to be fair I was at the top end of all the measurements in the size chart), but the next size up was very easy to get on and was comfortable to wear the whole meet. I think there is quite a big difference between sizes. The one I ended up keeping (the smallest one I could get into) is probably a bit too loose but I don't think it slowed me down.  An added advantage is the colors are great and the price is not outrageous.

    Long Torso swimmer

    Fit: Feels true to size

  • 11/8/2020 Tech suit

    5 Review Stars By CB2

    Straps comfortable and great fit

    Grand Rapids MI

  • 1/13/2019 Great suit!

    4 Review Stars By Masooma

    This swim suit is awesome! It looks and feels great on. I think I should have gone a size up but the more I use it the better it fits. I think the straps are a little tight on the shoulders, but you don’t feel them in the water. It meant to be tight coz it’s a compression suit. I definitely feel faster when swimming as there is no drag at all! Very happy with the purchase.


    Fit: Feels true to size

  • 3/24/2020 Pretty Good!

    4 Review Stars By Ann

    This was my second tech suit and I really liked it! I am 5'4 and 105 pounds so I got a size 24. When I tried it on it fit perfectly and tight like it should be, than when I got into the water it did loosen up a bit. Overall it is good.

    Chicago, Il

  • 6/9/2018 Great suit... and of course we got it in 2 days... was shipped the day I ordered

    5 Review Stars By Denise

    Swim outlet gets us the products the fastest!  The suit was shipped the same day!! Thanksswim outler!!!

    Westchester County NY

    Fit: Feels true to size

  • Top Valid Form
    Validate Warning
    Email Address Invalid. Please enter an email address in the format: xx@yy.zz
    Validate Close

More From ARENA

About This Brand


Since 1973, Arena™ has been a global influence and leader in competitive swimwear and accessories. Used by international top athletes and the official swim teams of UCSD, UC Berkeley, and Cal Poly, Arena swimwear is as synonymous with water as it is to swimming. Arena boasts a number of streamline, comfortable, and durable swimsuits that are perfect for competitive swimming and races.

By investing in innovation and researching fabrics and textiles, Arena is continuously discovering and utilizing unique technologies. Their high-tech patented Powerskin™ fabric claims to be the lightest fabric in production, weighing only 125 grams per square meter, while their stitchless seams keep mobility at its highest and reduces drag.

With offices populating Europe, Asia and the US, Arena is making waves worldwide with their quality line of goggles, training equipment and competitive swimwear. Whatever your swim needs, Arena has you covered with their jammers, one pieces, and neck-to-knee suits.