Wacoal HAI innerwear, navy blue. It's breathable and feels smooth. I didn't wear it much because I don't like V-necks. What is Wacoal Hai? "HAI" offers two product lines: "Body Function Support," which is designed to support smooth movements of the shoulder blades and hip joints, and "Age-Related Support," which uses materials with a comfortable feel and addresses age-related odors. Uniqlo Airism Golf Hiking Mesh