Hydration vests for sports, ultralight backpacks, bike water bags.

- Names/Types: Cycling, running, hiking, hydration backpack, breathable bike gear, off-road marathon, water bag backpack, sleeveless sports shirt   

- Material Texture: Polyester   

- Application Scenarios: Outdoor sports   

- Colors: Light gray, black   

- Pattern: Solid color  

 - Applicable Sports: Mountaineering, hiking, cycling   

- Product Category: Sports backpack   

- Quotation Year & Season: Spring 2025   

- Hardness: Moderately soft   

- Capacity: 10.2x15.2x5.1 cm   

- Material: Nylon   

- Target Gender: Unisex (neutral)   

- Functions: Breathable, ultralight, storage-friendly   

- Style: Leisure travel