The Craft Cool Mesh Superlight Base Layer. Superlight mesh top with big -hole design for superior ventilation/cooling.  Craft Cool Mesh Superlight Base Layer Features Ergonomic fit for total freedom of movement. Designed to keep you cool while exercising. Lightweight, micro polyester mesh fabric with a 6 - channel fibre construction that effectively pulls perspiration vapour off the body to keep you cool. Exellent moisture transport. Soft and comfortable.