FINA-approved arena competitive swimming suit, stylish black and blue design. ■Materials and Features 【Aquaforce Film Tri】 (80% Polyester, 20% Polyurethane) ＜Compression＞ ・Suppresses muscle vibration with compression unique to woven fabrics. ＜Pursuit of ease of movement and wearability＞ ・New material that stretches with 80% of the force. (Compared to AQUAFORCE FUSION2) ・Uses knit material for shoulder straps. 【AQUA XTREME】 (73% Polyester, 27% Polyurethane) By arranging polyurethane horizontally to wrap around the body, and adopting AQUA XTREME material, which has a 5% higher vertical elongation rate compared to X PYTHON2, we pursue ease of swimming. 【Half Spats Open Back】 Provides firm support for the thighs. Achieves muscle vibration suppression and low resistance. Opening the back allows for smoother swimming movements. By making the shoulder straps cross-back, the range of motion of the shoulder blades is increased, improving swimming performance. 【Back Style: Open Back (Cross Back)】 【Inseam: Above the knee】 【WORLD AQUATICS Approved Model・WA Approved Model】 World Aquatics (World Aquatics Federation) *Formerly Fédération Internationale de Natation (FINA) Fédération Internationale de Natation (FINA) is the international governing body for aquatic sports competitions. The name was changed from FINA in December 2022 to World Aquatics. The "AQUAFORCE Fusion-Tri" series is recommended for swimmers who are trying woven swimwear for the first time. This is a FINA (International Swimming Federation) approved model required to participate in official competitions. It reduces muscle vibration with compression unique to woven fabrics. Also, compared to the conventional model "AQUAFORCE Fusion2", it uses a material that stretches with 80% of the force, making it a woven swimsuit that is easy to move in and wear. - Brand: arena - Color: Black/Blue - Certification: FINA Approved - Size: S It has been worn a few times, so there is some wear and tear, but it is still wearable. Please ask if you have any questions.