The TAB Gear SAS2 Suppressor Cover is designed to prevent mirage from obscuring your site picture after multiple shots. Eliminating mirage is accomplished by the use of insulating materials - your can heats up, but the SAS stays cool. The outer shell of the TAB SAS will not heat up so your equipment and person will not become damaged with accidental or intentional contact. Removal and handling of your can, while inside the TAB SAS, immediately after firing is possible due to the high quality insulating materials used in the construction. This model is a fully enclosed tube of protective material, with shock cord sewn into each end. The shock cord makes this cover a little more difficult to install and remove but this model was designed for this purpose. The advantage is that there is no right or wrong way to install this cover, simply put it on and go. This model was designed for the person who may be stalking and doesn't want the cover to slide back onto the barrel exposing the metal can to making noise should it come in contact with hard surfaces.