This is an accessory specifically for the Loop. It's a silicone part that reduces noise by 5dB. Please use it with the wider surface facing outwards. The outer bag will be disinfected before shipping. Change to regular mail: 649 yen. Related items: #kii_audio_ (100 yen discount for each additional item included in the tag) ★ No price negotiations ★ First come, first served (immediate purchase takes priority) Loop Mute