Fabletics Sync Seamless High-Waisted 7/8 Legging. Studio sessions are now a breeze, thanks to our mesh seamless 7/8 leggings, designed with a supportive high-rise waist. 91% Nylon, 8% Elastane, 1% Other fiber. (Stain on leg, Picture to show) Good Pre-Owned Condition. Size Medium.