
I've been using these filters for a while and I have to say I prefer Eco Four-twenty to other brands. First, stylish looks and ease of use. Comfortable silicone mouthpiece with the tube over the lips, not the lips. The replacement filter is easy to change and comes in two packs so you always have a spare on hand. The cost of two filters is lower than the cost of one with other filters, although many people disagree on how long these filters last. And while I haven't sat down and counted my exhalations yet, I will say that there are "many" factors that affect a filter's lifespan, ie. H..... What you push through the pipe first, cigarette smoke, cannabis smoke (including strains), the way you smoke (roller, pipe, hookah), etc., some release more moisture than others. In group sessions, the more smoke that is forced through the pipe, the more moisture is held in the pipe over a longer period of time. All of these factors affect the lifespan of any of these filters. I use these filters every day! And with the above factors I had a clogged filter in just a week but in most cases it lasted 3-4 weeks. Yes all. Again, what you express through these filters matters a lot. Can I recommend the Eco Four Twenty filter? Yes, this is a reliable product. Customer service is fantastic and Michael the owner goes to the customers which is always a plus.

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