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TYR Prism Thin-X Back

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Product Rating   Product Rating  23 customer reviews|57% say too small
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Product Code: 30730

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    With a sleek, cutout design and a funky print, the TYR™ Prism Thin-X Back makes going to swim practice more fun than ever.

    • Extra-thin straps and minimalist back reduce tan lines.
    • Heavy gauge rubber straps hold suit in place.
    • 100% chlorine resistant for 72 hours of exposure.
    • Sun resistant and colorfast.
    • X back.
    • High cut leg.
    • 4-way stretch technology.
    • Fully lined.
    • Durafast™ Polyester lasts 20 times longer than traditional fabrics.
    • 92% Polyester / 8% Spandex.
    • Imported.


  • 3.5 star rating (23 Reviews)

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  • 9/27/2012 Nice suit but....

    rating star By Princess Peach

    Excellent suit except it is cut way too small.  We sent it back.  Giving it 3 stars for the quality & design.

    Princess Peach
    Sammamish, WA

    Size: Feels too small

  • 9/11/2012 awesome

    rating star By RS

    I use this suit everyday for swim practice, around 7-8 times a week. I usually wear a 32 for practice, but I got a size up because TYR runs very small. The 34 fits perfect.
    I wouldn't recommend this suit for girls with large breasts, because the suit is very tight at the chest. I would also recommend getting 2 sizes up for girls with wide torsos, because this suit does chafe a little at the shoulders and where the straps wrap around your back. Besides that this suit is great. Love the design.


    Size: Feels true to size

  • 9/4/2012 skimpy!!

    rating star By Leanne

    I am 5"10" and wear a size 6 or 8. This suit was so small in the rear end coverage that if my behind was covered, my crack showed at the top, If I pulled it up, my behind hung out. And I do not have alot of behind. I am not a teenager, but I usually go one size up to allow for extra length. This usually means the suits fit easily with room to spare. Not so with this one!

    North Carolina

  • 9/1/2012 2 sizes too small

    rating star By swimom

    Across the board with all companies my daughter wears a 28. This fits like a 24. Ridiculous!

    south carolina

  • 8/24/2012 way toooooo SMALL!!!!

    rating star By bemose

    Beautiful looking suit but not even CLOSE to fitting.....ordered several suits at same time, same size but this one seemed several sizes too small.  Had to return!

    Ontario, CANADA

    Size: Feels too small

  • 8/23/2012 Great Suit!

    rating star By Swimprincesa

    Love TYR thin straps.  Great fit, price, and quality.

    Brooklyn, NY

    Size: Feels true to size

  • 7/15/2012 Light Coverage

    rating star By TrichickCO

    I wanted a one-piece that was not as 'serious', this fits the bill. Minimal coverage compared to the rest of my suits, and I have a larger chest that this doesn't hold in very well, but it's ok for the casual swims I had in mind. Back bottom also doesn't leave much to imagination... good 'swim on vacation' and minimize tan lines suit.

    Colorado Springs, CO

    Size: Feels true to size

  • 7/12/2012 TYR Prism Thin-X Back

    rating star By canrod

    Ive used TYR swim suits exclusively for over 20 years. Great fit. Wears well and styles for every activity.  At 5'2" it fits very comfortable.
    This one is true to its predecessors.

    Nashville, TN

    Size: Feels true to size

  • 7/11/2012 Cute but small

    rating star By AMART

    Runs way too small. Hade to go two sizes bigger than normal. Cute

    Munster, Indiana

    Size: Feels too small

  • 6/28/2012 Prism - runs small

    rating star By KH

    Runs very small.  We ended up getting 2  sizes larger than we normally order and it fits very snug.


    Size: Feels too small

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Founded in Southern California in 1985, TYR™ has since developed a reputation for high-quality products and equipment. TYR competition swimwear and triathlon gear have been a dominant force in their respective industries. The company is also known for its TYR goggles, swim apparel, triathlon wetsuits and a wide variety of swimming equipment.

TYR was the first company to introduce a pair of goggles designed to fit a woman's face (the TYR T-72). TYR was also responsible for the famous red bathing suits featured on the hit television series "Baywatch." TYR consults with current and former athletes when developing its products. Swimmers know that TYR is a leader in swimsuits, warm-up suits, and swim training equipment. The TYR Tracer Series is one of the most advanced technical suit lines on the market. The TYR Hurricane wetsuits and the TYR Torque collections include top-of-the-line suits for the competitive swimmer.

TYR has also moved into competitive running equipment. From running shirts to shorts, its apparel is designed with the runner in mind. Built with moisture wicking fabric and antimicrobial material, TYR running apparel is designed to give the athlete the most comfortable, dry clothing on the market.

The name "TYR" is derived from the Norse god of warriors, who is said to have embodied victory and glory. Much the same can be said about the athletes who started TYR. Executive Vice President, Steve Furniss, was an Olympian who competed in the 1972 and 1976 Summer Games, and captained the 76th U.S. Olympic Swim Team.