FEATURES FINA Approved Front chest aperture in lining - for better upper body flexibility, without compromising on overall compression and support. Large internal lining coverage, with carbon bands - for enhanced core stability and body position for lower drag. With a maximum, evenly distributed pressure profile and a locked-in feel through the legs and torso. Internal taping system - for a sensation of powerful support and core stabilization. Twin-tape structure - on the back of the legs for a lifting effect to help hold a high body position even when fatigued. For maximum hip height in the water. Carbon age Fabric - a horizontal and vertical grid that surrounds specific muscle groups for very strong and durable all-over muscle compression with a locked-in feel. OUTER SHELL - 52% Polyamide; 47% Elastane; 1% Carbon Fibre INSIDE LINING - 49% Polyamide; 50% Elastane; 1% Carbon Fibre The Arena Womens Powerskin Carbon Core FX Kneeskin is a compressive racing swimsuit that gives additional core support, a tightness that still allows for freedom of movement, and a lifting effect that keeps your body position high throughout your race. A new twin-tape structure for a leg lifting effect and our all-over carbon cage material provide a powerful sensation of body stabilization. *Please note this is a specialised piece of compression swimwear designed for athletes. If you are unsure whether this will be suitable please get in touch with our customer services team “We sell the European Arena Racing Swimsuits which often feature an additional manufacturer's logo when compared to the American varieties. Other than the size of the logos, the suits are identical. Please be aware that the additional logo on Arena's European Racing Suits may exceed the 2.25 square inches of logo allowed in USA competitions. NFHS (The National Federation of State High School Associations) and NCCA (The National Collegiate Athletic Association) have rules on swimsuit branding and these suits are not compliant with the branding restrictions of these organizations. They are however fully compliant with UK, European, and the rest of the world's regulations.”