Why Athletes Choose Merino wool – the Science Explained

Australian Wool Innovation has commissioned a major research project that has demonstrated the dynamic breathability of merino wool.

A major four-year research program led by North Carolina State University has revealed 100% Merino wool base-layer garments deliver superior thermal comfort and performance benefits during dynamic stop-go sports like cycling, rock climbing, hiking and golf. The concept, known as dynamic breathability, reflects how well a Merino wool garment adapts to changing conditions: managing heat and moisture when the body is working hard, and preserving warmth when activity slows or stops.

Unlike traditional synthetic performance wear, Merino wool maintains thermal equilibrium during both exertion and rest. This means wearers can avoid the negative skin sensation known as after-chill so commonly experienced in outdoor sports, and instead can be assisted in conserving energy and maintaining comfort when it matters most. With the human body continuously working to maintain 35OC skin temperature throughout stop-go sports, less work is needed in wool.

This breakthrough positions Merino wool as the natural performance fibre – no longer anchored by anecdotes, but by thorough science.

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