arena Competitive Swimsuit Aqua Advanced Half Spats Open Back (Knit Material/Cross Back) | Official Competition Approved Knit material pursuing ease of movement Uses "AQUAXTREME" For swimmers aiming for times at regional competitions Stretches vertically and horizontally for a secure fit and easy swimming. Water-repellent treatment provides a light swimming feel. Never had a chance to wear it, and it has been stored at home.