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Pearl Izumi Merino Thermal Ls Baselayer

Our warmest base layer has the technology to keep you dry and comfortable even during hard efforts.

Mid-weight Transfer Merino fabric combines wool and recycled polyester for sustainable technical performance

Unique plated fabric construction places polyester next to skin and merino on the exterior for superior moisture transfer and thermal regulation

Made using fine 18.5-micron merino wool for superior comfort

Recycled Repreve® XS Polyester technical fibers are made from recycled plastic water bottles

Set in sleeve construction for easy layering and versatility