Made with Powerhold fabric and InstaBoost technology, our beloved Boost yoga leggings are now available in a 6" cut, just in time for spring! features. Scratch-resistant. Moisture wicking. UPF protection. 4-way stretch. fabric and care. Staying Power. Designed for maximum compression, our famous signature fabric, PowerHold, flatters your figure and keeps you still without holding you back. Use it during boxing, squats, and anything in between. 88% polyester/12% elastane.