Ultraspire Zygos 5.0

Since the first iteration of the Zygos, tens of thousands of runners have utilised this high-capacity 14 litre race vest. The lightweight (386g nude / 517g bladder included) and comfortable wrap around design complimented by the new ErgoFit Harness ensures the Zygos 5.0 will be stable, comfortable, and hassle free.

Our ultra comfortable, versatile large volume pack utilised in any long run scenario, training or Ultra Distance racing. it's 14L capacity will comfortably hold all required race lists for any domestic or international ultra marathon from 50km, 100km and beyond. with three sizes, Small, Medium & Large you're sure to find the perfect fit.

Sizes: The measurement is around the widest part of your chest with a tape measure under your arms. Think about what clothing you expect to use with the pack and measure with this clothing on to achieve an accurate measurement as possible. If you find you're between sizes we recommend going up to the bigger size.

Small         (76cm - 91cm)
Medium    (81cm - 96cm)
Large         (86cm - 106cm)