MARIMEKKO TENNIS Y-DRESS PRIMEBLUE AEROREADY. Since the '50s, Marimekko has been all about female empowerment and expression. Part of a woman-exclusive collaboration with adidas, this tennis Y-Dress combines elite performance with a powerful message. You'll nail every return thanks to a lightweight, elastic Y-back that gives you space to swing. Snug at the top, the dress flares into a flattering A-shape.