Choose your next-to-skin layers
Compare Foundation tops and bottoms by coverage, layered fit and how you change insulation during the day.
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Frequently Asked Questions
Should base tops and bottoms have matching numbers?
No. Choose each around coverage, fit and your layer-change routine.
Are owner temperature reports garment ratings?
No. Activity and other clothing contribute to the experience.
Are all Foundation pieces pure merino?
No. The selected listings include different blends; check the exact model and label.