Key Product Features. Low Profile - Shallow crown for a relaxed, casual fit Garment Washed - Refined softness with a natural, worn-in look Superior Cotton Twill - Soft, breathable, and naturally comfortable for all-day wear Unstructured Soft Crown - Conforms to the head more closely Soft Stretch Mesh Back - Provides enhanced airflow, breathability, and comfort Enclosed Back - Clean, fitted design for a streamlined look OTTO FLEX Stretchable Sweatband - A snug, flexible fit with antibacterial, anti-odor and moisture wicking properties