The Symmetry Set. Made from a blend of polyamide, polyester, and elastane, this athleisure set is perfect for all your daily activities. Thumbholes provide comfort while the peekaboo back and waistband offer stylish details. Stay cool in summer and transition to fall with this set. Fabric: 60% polyamide 30% polyester 10% elastane Runs true to size. If you are in between sizes, size up.