Horse Pilot X Aerotech Mens Hunter Riding Breeches Flag Day Daily Bulletin. Summer riding breeches in lightweight, breathable bi stretch fabric perfect for training in warm conditions. Laser perforations on the body's heat zones for improved airflow: lower back, back of the knees, and outer thighs. Mesh panels inside the waistband and along the calves for enhanced breathability. Knee grip for a secure seat in the saddle.