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Nothing like your grandma's fanny pack, the ultra-light and minimal UltrAspire Quantum belt is a leap forward for runners looking for extra carrying capacity on the trail or road. A zipper stretch mesh pocket fits a smartphone and keys while dual elastic pockets stash gels and electrolyte caps. The stretch mesh and compression strap create a snug, barely there fit that doesn't require a snap buckle and doesn't bounce; hidden race number clips make the Quantum an ideal race-day companion.

*See UltrAspire Quantum Size Chart for sizing info


  • Steep Green/Grey (GN)


  • Ultra-lightweight belt carries essentials for training or racing on either roads or trails
  • Sweat proof webbing prevents belt from absorbing moisture and getting heavier as you run
  • Larger holes in mesh enhance breathability to keep you cool while also decreasing
  • Stretch fit with front compression strap keeps belt secure without buckle system (to wear belt, slip on over legs like putting on shorts)
  • Rear zipper stretch mesh pocket for nutrition, keys and smartphone (fits iPhone 4 & 5 with case)
  • 2 front open stretch mesh pockets for gels, gel flasks or electrolyte capsules
  • Hidden race number clips for race day
  • Reflective front and rear details for increased safety in low-light conditions
  • Weight: 80g (2.8 oz)

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