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Mike Hamill

Our collaboration with mountaineer Mike Hamill, who has guided 72 expeditions to altitudes exceeding 18,000 vertical feet, including 5 on Mount Everest and 18 in the Himalayas above 8,000m.

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Size Me Up
Unichill onesies fit on the comfy side.
Our onesies are made with wedgie-proof drop crotches and a relaxed mid-section for optimal comfort. 
Unichill onesie size chart
Shot us an email if you have any questions!