2XU Women's Perform Tri Crop Top 83% POLYAMIDE, 17% ELASTANE Imported Engineered with 70D elastane, SBR Power, ergonomically designed for power, durability, strength and comfort Sensor Mesh X ventilated panels lets fresh air come in while keeping sweat out Form fitting style with flatlock stitching enhances comfort, eliminating chafing and irritation 50+ UV fabric provides extra protection against harmful rays