With its 19cm cuff height, this is ideal for wearing beneath tights or jeans. We use a comfortable combination of fine Merino wool and technical recycled polyester fibers for temperature regulation, with mesh over the instep to increase ventilation. Nylon in the heel and toe increase durability, and a flat seam in the toe to eliminates unnecessary bulk. As its name suggests, this is our tallest standard weight sock. Transfer Merino fabric combines wool and recycled polyester for sustainable technical performance. 18.5-micron fine Merino Wool Repreve® Recycled Polyester created from recycled plastic water bottles. Flat toe seam construction provides superior comfort over toes. Anatomic arch compression for a performance fit. Mesh ventilation over top of foot. Cuff height (19 cm).