Ordering and more product information: https://www.sportsunion.net/products/mizuno-swimming-pants-n2mb1024-blackblue [FINA approved] STREAM ACE, a swimsuit made from low resistance, waterproof knitted material. Combines durable design with conventional exchange structure. FINA (Fédération Internationale de Natation) approved. Inner seam/26.5cm (Size M). Padded lining specification. Uses super flat sewing machine which is gentle on skin. Low resistance, waterproof, stretchable material: Using Streamfit A "The knitted swimwear ace of STREAM" [Low resistance knitted material: Streamfit A] Reduces water flow resistance through water-repellent fabric surface and textured stripes and diamond pattern embossing, thereby achieving improved hydrodynamics.