• 【Wearing comfortable fit】Running hydration vest, chest buckle can be adjusted up and down, fit the torso, meet different body shapes, do not add extra weight for exercise. Make sure you are breathable and fit properly when cycling, hiking, traveling, etc. L size suggested chest size 35.43 "-45.27"; M size suggests bust size 34.25 "-43.30".
• 【Hydration Backpack】The backpack weighs only 0.18KG, light weight and breathable, suitable for running, cycling, hiking, cross-country, marathon, skiing and other outdoor sports.
• 【Multi-purpose storage space】Lots of pockets to store your 500ml soft kettle, keys, 6.8-inch phone, gym towel, raincoat, gloves or other small outdoor tools.
• 【Reflective strip design】More safe at night, reflective backpack front and back design, in the dark environment can reflect strong light, providing night running and cycling activities safety.
• 【Comfortable and durable】Fastener, strong toughness, strong and durable; Elastic fabric, light and breathable, good wear-resistant elasticity; Polyester mesh cloth, breathable and quick drying; Sewing process, soft flanking cloth more comfortable.

• 【Wearing comfortable fit】Running hydration vest, chest buckle can be adjusted up and down, fit the torso, meet different body shapes, do not add extra weight for exercise. Make sure you are breathable and fit properly when cycling, hiking, traveling, etc. L size suggested chest size 35.43 "-45.27"; M size suggests bust size 34.25 "-43.30".
• 【Hydration Backpack】The backpack weighs only 0.18KG, light weight and breathable, suitable for running, cycling, hiking, cross-country, marathon, skiing and other outdoor sports.
• 【Multi-purpose storage space】Lots of pockets to store your 500ml soft kettle, keys, 6.8-inch phone, gym towel, raincoat, gloves or other small outdoor tools.
• 【Reflective strip design】More safe at night, reflective backpack front and back design, in the dark environment can reflect strong light, providing night running and cycling activities safety.
• 【Comfortable and durable】Fastener, strong toughness, strong and durable; Elastic fabric, light and breathable, good wear-resistant elasticity; Polyester mesh cloth, breathable and quick drying; Sewing process, soft flanking cloth more comfortable.

Product Information
Product Color: Dark gray orange, blue, green, orange, black, light gray orange, gray green
Dark Gray & Orange, Blue,Green, Orange, Black, Light Gray & Orange, Gray Green
Product Size:
M Size 15.74 "X 7.08" X 15.74" 2.5L
L Size 17.71 "X 9.44" X 16.53" 3.5L
Product Weight:
M size is about 0.13 KG
L size is about 0.18 KG
Packing Listing: Running Hydration Vest X1