The One K Defender Helmet blends modern safety technology with a polished, traditional aesthetic suitable for riders across disciplines. Its injection‑molded outer shell combines polycarbonate and ABS composite materials to deliver dependable impact protection while maintaining a sleek, classic profile. Front, side, and rear vents—each covered with stainless steel mesh—promote consistent airflow to keep the rider cool and comfortable. Inside, the Defender features a washable, quick‑dry liner with moisture‑wicking and anti‑microbial properties for lasting freshness. A padded harness lined with synthetic suede ensures a secure, comfortable fit. Offered in both regular/round and long‑oval shapes, the helmet accommodates a wide range of head profiles for improved fit accuracy. ASTM certification further reinforces its balance of safety, comfort, and timeless equestrian style. Key Features: Durable composite shell — polycarbonate and ABS construction with ASTM certification Enhanced ventilation — multiple vents with stainless steel mesh for improved airflow Comfort liner system — washable, moisture‑wicking liner with an adjustable padded harness