PEARL IZUMI MERINO WOOL HATPearl Izumi made this skull cap low-bulk with Pearl Izumi'splated Merino/polyester construction. Soft against the ears, you'll find it warm enough for crisp days yet able to regulate temperature as things warm up. Its low-key styling can go from beneath the helmet to lunch spot without a costume change.FEATURESTransfer 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.Close-fitting design easily fits under helmets and looks good on its own. BioViz reflective elements for low-light visibility.Wool Blend Performance certified by the Woolmark Company to ensure the highest quality product.TECH SPECSMaterials: fine 18.5-micron Merino wool