A long sleeve bike jersey designed for the most demanding.4.0 Ultraweld is the technical cycling jersey made of ultra-light stretch knit fabric with moisturecool moisture resistant material and ventilation channels.The tight race fit makes it usable with or without protective clothing, and, like little bike jersey on the market, it is neck brace-compatible.The elbows are reinforced with Brush Guard and an ultra-flexible and lightweight film increases scratch and abrasion resistance.In addition, the Ultraweld 4.0 bike jersey offers heat-sealed seams on the cuffs and hems for maximum comfort and non-slip silicone parts that allow it to keep in place at all times.