• （█NOTE: THIS VERSION DOES NOT INCLUDE 250 KETTLES）MATERIAL- Made of ultralight nylon,spandex and polyester fiber, breathable mesh back and shoulder strap,very lightweigh comfortable and durable.
• SIZE- One size,Recommended chest circumference 78-110cm / 30.7-43.3 inch,so it can fit most body sizes and keep high stability.
• REFLECTIVE STRIP DESIGN FOR SAFETY - Front and Back Reflective Strip Design, ensure safety in any light at night during sport .
• MULTIPLE STORAGE COMPARTMENTS - Enough pockets and pouches that can store items like cell phone, keys, thin raincoat, water bottle, hydration bladder and other items for outdoor activities.
• SUITABLE FOR VARIOUS OUTDOOR ACTIVITIES - For night walking, cycling, hiking, climbing trail and all other outdoor sports and exercise.