The jacket uses a searsucker fabric, which has a dimpled surface & helps to create a warmer feeling against any skin contact areas. A special lightweight zip manufactured by YKK has been specified to help keep the garment lightweight & flexible to improve comfort when running. Ultra thin bonded chin guard & full length zip baffle keeps the zip away from the body for comfort. The jacket features a 25cm reflective insert at the front, a reflective print pattern at the rear as well as reflective logo on front & back to help improve visibility to others in low light conditions. Under arm panels are made from a polyester mesh to shed heat as intensity of activity increases. The jacket benefits from a stuffit side pocket, which the jacket can neatly be packed into. 6cm collar & sleeves with thumb loops help to give good coverage & keep chilly drafts out. A durable showerproof coating (DWR) makes this suitable for very light or intermittent rain conditions; the jacket is classed as showerproof (not waterproof). Polygiene&174; Permanent Odour Control This dhb garment is treated with Polygiene&174; permanent odour control, helping to keep you fresh & odour free. Polygiene naturally inhibits the growth of odour-causing bacteria & fungi on fabrics, allowing you to wear more & wash less. Clothes can be worn several times before laundering. Polygiene will help to make your clothing last longer as bacteria & excessive washing do not break down fibers as quickly as they do on untreated material. Using components of natural silver salt made from recycled silver, Polygiene meets the highest standards for skin safety & hygiene, & is guaranteed to last for the lifetime of the product.