【Perfect Fit】This running vest is ergonomically and contoured to fit the body perfectly, the adjustable waist and chest straps can adjust the size according to your body type, preventing annoying bounce and shaking while running.

【Super Comfortable】Stretch mesh fabric brings cool comfort to your back, and the light and soft shoulder straps will not rub against the skin at all.

【Ultra Lightweight Design】High-quality nylon material and ultra-lightweight design, more comfortable to exercise,the sports backpack only weighs 190 grams, 12(H) x 2(W) x 8(L) inches ,the main compartment can hold 3 liters, the left and right shoulders have pockets for storing 250 ml PET bottles, and There's a pocket for your phone and stuff, and you can jog while listening to music.

【Safety Measures】This running bag is equipped with a safety whistle, and multiple reflective designs increase the safety in dark conditions.