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Ultraspire Zygos 4.0

Ultraspire Zygos 4.0

Regular price $249.00 AUD
Regular price Sale price $249.00 AUD
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Size Guide

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Our ultra comfortable, versatile large volume pack utilised in any long run scenario, training or Ultra Distance racing. its14L capacity will comfortably hold all required race lists for any domestic or international ultra marathon from 50km, 100km and beyond. with 5 sizes, from XXS to Large you are sure to find the perfect fit.


Unisex take measurement in cm from the armpits around the fullest part of the chest to find your ideal size.


  • XX Small (66cm  81cm)
  • X Small (71cm  86cm)
  • Small (76cm  91cm)
  • Medium (81cm 96cm)
  • Large (86cm 106cm)
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