Size Guide

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The 7SUMMITS jumpsuit is unique in many ways, but most importantly, our collaboration with mountaineer Mike Hamill and Climbing The Seven Summits. We have partnered with Seven Summits to donate 25% of each sale to the Tiger of the Snows Fund, which supports Sherpas who are out of work this climbing season. As you can imagine, with no international travel, Sherpas have lost their only source of income.

You can feel good about your donation while you chill is this high quality onesie. The 7SUMMITS comes with many great features and a design that lends itself to the story. Reflector ink makes sure you are visible on the mountain or on the couch, either way, you are sure to be comfortable in this memorable piece. 


      1. Original UNI onesie is made from super soft, premium fabric 
      2. 80% Cotton, 20% Polyester | Brushed fleece interior | 350gsm
      3. Reflector ink on the chest and back for added visibility
      4. Two way YKK® front zipper with UNI pull tab 
      5. Official 7SUMMITS patch on right side arm
      6. Spacious hood & oversized drawstrings
      7. Zipper Interior Protection (ZIP) liner
      8. Navy UNI patch on left side arm
      9. YKK® zipper side pockets
      10. Embroidered "7Summits"
      11. Designed in Canada
      12. Elastic ankle bands
      13. Ribbed wrist cuffs
      14. Kangaroo Pouch
    *Please refer to the adult 7SUMMITS product shots for detailed photos. We were unable to get youth models during COVID and hope to have more compelling photos soon.
    ALL onesies are UNISEX

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    UNI onesies tend to fit on the comfy side.
    Our onesies are made with wedgie-proof drop crotches and a relaxed mid-section for optimum chill and comfort. 
    Shot us an email if you have any questions!