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62 requests
Product Description
Designed to keep your feet feeling fresh and comfortable, the Icebreaker Fine-Guage Ultralight socks are ideal for trail runs, long hikes, and daily wear. Available in a variety of styles and sizes, each pair is made from a merino wool, nylon, and Lycra blend that provides just the right amount of warmth, breathability, and stretch—not to mention odor resistance Read More
It appears that's how the manufacturer sells them - in two confusing sizes. I'm a 9UK/10US as well, lol.
This method of sizing seems to suggest they're probably designed to be stretchy enough to span 3.5 sizes. I'd lean towards the larger sizing myself since I'd prefer less stretch. Anyone familiar with this brand please chime in.