Men's GX-Sonic III ST Jammer Swimsuit
Item 570001
Was: $350.00
Now: $262.50USD

Buy from Mizuno USA for a product engineered specifically for the North American Market. Available exclusively online.

*Note: These elite tech suits are engineered to fit very tightly, like another layer of skin.
If you have any questions about your size, please contact customer service.

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ROYAL-WHITE (5200) RED (1010) BLACK-ROYAL (9052) ROYAL-ORANGE (5220)
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The Mizuno men's GX-Sonic III ST competition jammer is designed and equipped for speed.

The Sprinter (ST) model is designed exclusively for short distance sprints. The Sonic Ribtex is designed to compress and support the hamstrings. The suit supports up-kicks through its proprietary design, cutting pattern and seams allowing you to maintain a streamlined posture through the entire race, keeping your legs fresh to the finish!

For information on team orders of 12 suits or more, please click here.

Return Policy: will gladly accept returns on products in new and unused condition, with tags intact and packaging included within 30 days of the order shipment date for a full refund. The swimsuit cannot be returned and you will not be refunded if the suit has been worn in the water. Please note, will only accept returns purchased from If you plan to make a return, please keep your customer order number for reference.


Men's Swim Jammer Key Features:

  • Sonic Light Ribtex: Speed enters a new dimension.  In addition to helping compression, Mizuno's proprietary material has an uneven surface, which reduces surface friction with water up to 9%.
  • Sonic Line Design: Created through proprietary dynamic analysis of muscle load during swimming.  The balance between strength, support and ease of movement is determined through musculoskeletal simulation.
  • Expanded Area of Support: Support areas have been extended down the hamstrings for streamlined swimming in new dimensions with the series' largest ever support areas.
  • FINA Approved: Approved by FINA for National and International Swimming Competitions. FINA Approved racing swimsuits have a unique FINA barcode printed on the swimsuit, making it easily identifiable to swimming officials.
  • Please note: The logo size on colorway Royal-White (5200) does not meet California High School standards.