Microfoam tape gags will keep them nice and quiet.
mmph-mmph-she-says.tumblr.com/post/119925543964/
nowheretohide14: Indy from Heels and Rope. lovely lady
Lydia from Ropexpert & Heelsandrope etc.
mmph-mmph-she-says.tumblr.com/post/119987342919/
mmph-mmph-she-says.tumblr.com/post/122509531639/
gag64: http://estore.surfnetcorp.com/2.0/storemedia/UnlimitedBondage/products/prod_59575158-B0AB-1B59-814A233D209CF6D8.jpg