Lululemon black Ventlight Button-Up Shirt. Size 8 Quick-drying Ventlight™ mesh fabric is four-way stretch, sweat-wicking, and naturally breathable Four-way stretch Sweat-wicking Quick-drying Naturally breathable features Designed for: On the Move Recycled polyester: 100% of the polyester in this product is recycled Versatile pocket: Chest pocket holds your passport or phone Locker loop: Locker loop makes for easy hanging Relaxed fit, hip length: Layers easily and gives you room to breathe