Every step, from design to finished product, reflects our devotion: Bold Color Blocking: Inspired by nature, just as day and night alternate, its contrasting halves push style to new height, screating a striking and personalized visual style. Premium Comfort Fabric: Crafted from soft, skin-friendly fabric with seamless color-blocking, it's smooth, breathable, and stays comfortable. Thoughtfully designed to resist shrinkage and hold its shape wash after wash. UV-Reactive Graphic: The chest emblem draws inspiration from new products¡¯ rotary switch and power indicator elements. It glows under UV light and continues emitting light in the dark after absorbing UV. Eco-Friendly Utility Packing: Eco-friendly pouch made of premium leather, complete with a secure zipper and a convenient strap for easy carrying. Water-resistant and durable, it's designed not just to hold the T-shirt, but to become a practical companion for your outings, safely storing your flashlight, charger, headphones, glasses, and other everyday essentials. May this T-shirt, much like Olight products, be a faithful companion¡ªlighting your path and illuminating the unknown. Available in sizes S-5XL. Please refer to the size chart below for accurate measurements. For long-lasting UV glowing logo effects, we suggest using laundry detergent for washing.