Abstract: Disclosed herein are a silencer for an airline hood and a protective hood having the silencer. The present invention reduces the speed of air fed into a space between upper and lower units, using an air distributing means, prior to discharging the air through air outlet holes formed on the lower unit to the outside of the space, thus minimizing noise due to the air. Further, the silencer for an airline hood is installed in the protective hood, thus minimizing noise, therefore increasing work efficiency, when a worker works with the protective hood on.

Abstract: Improved collar stay system, including a collar stay which engages with the tip of the collar at one end and a hinge member provided on a collar of a shirt. The hinge member is arranged and configured to engage with and hold the other end of the collar stay whereby a collar of new appearance is presented.