Color: Black Material: Spandex + Nylon + Polyester Size: S Purpose: To store water bottles, mobile phones, headphones, and other daily necessities. Suitable for: Cycling, running, fitness, and other activities. Product Description: 【Durable and Long-lasting Design】: Made with high-strength fabric for excellent durability. The surface treatment prevents fabric deterioration from rain and sweat, allowing for safe use even in harsh outdoor environments. 【High-Elastic Material, No Deformation, Comfortable for Long-Term Wear】: Uses a special high-stretch fabric that stretches freely and returns to its original shape. It has no constricting feeling and fits the body comfortably. 【Breathable Mesh Material, Prevents Stuffiness, Keeps You Fresh During Sports】: The part that contacts the waist uses breathable mesh, efficiently expelling sweat generated during exercise and preventing heat buildup. 【Lightweight and Large Capacity, Easy to Move, No Wobbling During Jogging】: The main body weight is reduced to the extreme, achieving an airy lightness, while the 360° circular pocket can store all necessary items such as smartphones, earphones, and water bottles. 【Multi-Scene Compatible, Covers Everything with One】: Ideal for sports scenes such as running, cycling, fitness, and yoga, as well as for organizing luggage during hiking and travel, and for daily commuting and shopping. ※Note: 1. Please understand that there may be slight errors in manual measurements. 2. Due to the influence of the display and lighting, the actual color may be slightly different from the image.