Comfortable but not total noise control (block out) if that’s what your looking for
I used these tonight while shooting guns at an indoor range. Positives: three different styles of ear plugs included, all inner ear (vs over the ears). I wore all three pair inside my outer ear muffs. The red ones were too tight in my ears. The blues ones were uncomfortable for me but they did work slightly better than the other two pair for noise reduction. They were also easier to get in and out. The grey pair was most comfortable for me and these are the ones I will be wearing most often. They worked very well inside my muffs and most importantly they stayed in place.  I did also try the blue ones without the outer ear muffs as well...would not recommend in this particular case. Packaging is very convenient.  Negatives: no instructions for the clear silicone “dots”. No clue what they are for but instructions otherwise for the ear plugs were precise and clear. As for complete noise canceling none of them were perfect but at an indoor gun range nothing works 100%. Would buy these again and plan on trying them in an outdoor concert soon.
Rating: 4 stars