I ordered the FDBRO Training mask, and received it very quickly so Customer Service was outstanding. Thank U for that and I am very happy with my Darth Vader breathing apparatus lmfo, becos when breathing in the Mask thats who I am reminded of. Thats Probably not new. I am very happy with my FDBro Training Mask. At present I use it when walking at 0430 in the morning and I practice Diaphragmatic Intercostal Breathing. Having the 'restriction' on inhaling makes for great concentration and has added a new dimension to my Breathing Exercise, and not that it matters to much but I am apparently 65yrs of age Im going to have the best lung capacity I can develop for a young bloke. A question: Are replacement parts available? Thanks again, Raz.