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UltrAspire Quantum 2.0

Luminous Blue
Pitch Black

The most comfortable waist pack ever! Like wearing a piece of lightweight clothing. Breathable stretch mesh and featuring the new Max O2 Waist™ attachment system.

Recommended Use:
Daily training essentials; half marathon to marathon with water stations.

• New stretch mesh fabric belt for lower pack weight and huge cooling and breathability!
• New Soft touch perimeter edging with beautiful de-bossed logos for a polished look, and a nonrestrictive feel.
• Max O2 Waist™ attachment system with greater recoil for better range of movement.
• Now with Magnon Electrolyte Pocket™
• Built-in clips for race bib attachment that tuck away when not in use.
• Longer zipper on main compartment to accommodate electronics.
• Multiple reflective details.
Fit: Unisex
Color options: Grey/Black, Luminous Blue, Twilight Green
Capacity: 46 c.i.; .75 L
Quantum 2.0 Sizing:


  Small Medium Large
Waist 25”-33” 29”-37” 34”-43”