This is a race hydration backpack streamlined to go super light and almost invisible on your back.

Features:

• Weighs only 309g (0.68lbs) excludes bladder weight
• NDM™ 4-point harness for a 100% bounce free fit
• Stretch support harness
• 1.5 liter Elite™ hydration bladder
• Water resistant phone pocket at the back
• Total number of pockets 2