This is the official Hotend Sock. The newest trend in 3D printing, hotend socks, help to keep hotend temperatures from fluctuating and therefore improving print quality. We have developed a high-temperature silicone sock designed to work well with all printers. Use this sock to help manage hotend temperature while cooling fans operate at high speeds cooling filaments that require a much higher extrusion temperature. This hotend sock will improve success rates on prints with these types of exotic filaments as well as reduce effects of heat radiation from the hotend onto smaller models which might be more sensitive to such heat fluctuations.