5L running or cycling bag

Product name: Running backpack
Material (fabric): polyester, nylon, spandex
Color: green, yellow, gray, blue, orange
Size: One size (38*20*3cm, suitable for bust 68-140cm)
Capacity: approx. 5L
Weight: approx. 170g
Dimensions are measured manually, there may be slight errors, please refer to the actual product.
Stretch polyester fabric, lightweight and breathable, water-repellent and wear-resistant.
Large capacity design, with reasonable space, can hold necessary personal belongings.
There are bust adjustment buckles at the top and bottom, which can be quickly removed and adjusted for increased tightness and ease of use.
Highly reflective strips and night warning strips are designed to act as a warning when moving at night under a light source.