Icebreaker Quantum Headliner Hat - Unisex
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With a slim stretchy design that fits perfectly under your ski bike or climbing helmet the Quantum Headliner is a minimalist beanie for under protective headwear. Made from a super-soft merino terry fabric with a touch of LYCRA® for stretch the Quantum also features earflaps for added warmth.


  • 260 midweight
  • 98% Merino wool / 2% LYCRA®
  • Regular fit
  • Warm
  • Comfortable
  • Breathable
  • Warm liner that fits under helmet for snow sports
  • Ear flaps for extra cold comfort
  • Non-itch

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