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Item #: 332274530

The Ultraspire Synaptic 1 Bottle Waist Belt features a contoured shape for great fit, with adjustment points on both sides for one size fits most athletes.  Perfect for road running crowd or for trail racing where aid stations are more plentiful. Race belts are cooler because they cover less surface area of the body, keep weight lower for better balance and are easy and fast to get on and off.


  • Dual-sided adjustment for good sizing range with single speed hook access for taking waist belt on and off.
  • Center front pocket may be maintained in the center of the body. The center front pocket is large enough for cell phone or energy foods with tuck away jacket straps perfect for extra clothing or Z-poles.
  • Angled minimalist bottle holster for easy right handed access perfectly holds 550mL UltraFlask™. Bottle rides close to the body for a comfortable stable ride.
  • The Synaptic is an MBS™ belt and the back is compatible and interchangeable with a Lumen 600 front for a hydration and illumination combo.
  • Small flat zippered pocket next to holster to secure keys or other essential items.


  • Fluid Capacity: 550mL UltraFlask bottle
  • Weight: 0.36 lbs
  • Total Volume: 34.2 c.i. (.56 L)


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