I purchased this item 2 or 3 years ago and have worn it a few times. Please understand that this is a used item. This running outer is designed for running in cold weather, pursuing a hybrid of wind resistance, heat retention, and breathability. The front body, shoulders, and hood, which are susceptible to cold air, use Pertex Quantum Eco to enhance wind resistance, while two different sizes of recycled polyester grid fleece are placed in appropriate areas in a double-layer structure to improve heat retention. The back is composed only of windproof material and grid fleece, with laser-hole ventilation to prioritize breathability. By performing ergonomic mapping, a comfortable in-clothing environment with good balance is designed. The sleeves are set slightly longer and equipped with thumbholes and a watch window. It also has UV care (UPF15-30, UV protection rate of 85% or more), which is great for sunny seasons. Function Watch window on the left forearm Thumbholes on the cuffs Pockets with zippers on both sides Reflector logo on front and back Laser-hole ventilation on the back - Brand: The North Face - Color: Black - Material: PERTEX QUANTUM - Design: Hooded - Model number: NL72277 Thank you for viewing.