This AONIJIE trail - running jacket (Model F5218#) is designed for trail running and meets mandatory trail race equipment requirements. It delivers heavy - rain waterproofing (>10,000mmH₂O) and high breathability (>13,900g/(m²·24h)), with 7D fully taped seams to block water. Weighing ~189g (size L), its 15D Nylon66 fabric balances lightness and durability. The back accommodates 5–15L backpacks, while dual YKK quick - release zippers enable easy hydration. A multi - adjustable hood, technical cut for free movement, and ventilation zippers boost breathability. Details like watch - accessible cuffs, military - grade reflective strips, adjustable sleeves, and foldable storage blend practicality and safety.