Fabric 100% Polyester UPF 50+: high-density fabric blocks 98% UVA/UVB Rays Soft & 4-way stretch Quick dry & lightweight Breathable Features: Slightly bouffant hem design Thumbholes: thumbholes in the cuff keep the tee in place High-Low Hem with Side Slits: It enables one to wear it comfortably even if they have larger hips. Occasions: Perfect for hiking, climbing, running, working out, and exploring on and off the path, it easily glides over the body for a perfect fit.