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![Sitka Core Midweight Bottom Sitka Core Midweight Bottom](https://cdn11.bigcommerce.com/s-fsdkgontf4/images/stencil/300x300/products/367470/2270/Sitka_Core_Midweight_Bottom__88618.1626449893.jpg?c=1)
The new Merino Lightweight Bottom features premium 17.5-micron merino wool spun around a nylon core, which produces a high-performance next-to-skin layer that combines the comfort, warmth, moisture management and natural odor control of merino with the durability and elasticity of nylon. With a high heat-to-weight ratio and excellent breathability, the Merino Lightweight Bottom excels as a versatile base layer across a broad range of conditions and activity levels.