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In creating the Boys’ BodyFit200 Mondo Zip Top, Icebreaker has proved, once again, that not all baselayer tops are created equal. Made of highly breathable, extra-fine merino wool, this top blends a super-soft, non-itchy feel with excellent insulation. The zip neck collar can be zipped up to trap more heat during cold spells, and then lowered to provide increased ventilation once the storm passes. Wear it as a layering piece on cold days or on its own during warmer months.

  • Merino wool’s natural fibers provide excellent insulation, resist odors, and, unlike traditional, long-cut wool fibers, merino wool’s fine-cut fibers are soft to the touch
  • Icebreaker’s merino wool garments are temperature regulating—meaning they trap warmth on cold days yet maintain a high degree of breathability that keeps your boy comfortable without overheating
  • Flatlock stitching pattern reduces chaffing
  • Icebreaker makes its products in a way that supports New Zealand farmers, ensures overall welfare of the sheep producing the wool, and promotes sustainable manufacturing

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Here's what others have to say...


Fits Small

  • Familiarity:I gave it as a gift but have feedback to share

I ordered my 5 year old this shirt in a 5/6 (his normal size in clothes) and when it came in ran a little to small for him. But a quick exchange with the awesome backcountry staff to a 7/8 got him fixed up. Good quality and very soft, a little thinner material than I thought it would be but this is actually a good thing, it keeps him warm and dry without the extreme bulk under his everyday clothes.


My son won't take it off!

  • Familiarity:I gave it as a gift but have feedback to share

I bought two of these for a ski trip as a base layer. It is so soft and warm, my 11 year old is wearing it everday as a shirt. I thought there might be an itch factor but there is none. If you have a kid who suffers from the "itchy, scratchy, squeezy" syndrome, this is a go to piece of clothing.


Fabulous Base Layer

  • Gender:Female
  • Familiarity:I gave it as a gift but have feedback to share

My son (11 years old) *loves* this shirt. He wears it every day as an over layer to school or as base layer for sports. It's light-weight, but warm and fairly durable (sleeves fray with the consistent use).