Lululemon sculpt tank. This tank was designed with Mesh fabric panelling in the back to help keep you cool while still fitting over your straight-strap bra. Fabric is sweat-wicking and four-way stretch. Added Lycra fiber for stretch and shape retention. Relaxed fit, hip length. Body: 73% Nylon, 27% Xtra life lycra elastane Mesh: 89% Nylon, 11% Elastane