BASE CAMP M Plus Dust Face Mask with Extra 6 Activated Carbon Filters for Woodworking Construction Mowing Cycling (3)

I looked at many of the dual port masks on Amazon; went over the reviews and the number of them. Most import. I looked at the MFG claims, 'English', timeliness of shipping, and response to an issue. All of these were excellent, either by review or personal experience. I also spent a great deal of time reviewing replacement filters. I found cheaper replacements, but none seemed to have the same quality. Of course both evaluations are purely subjective and 'marketing'. I do have >11 years in the field of Environmental, Health & Safety and another 20 years of Federal Service involving Product Assurance, Design ....So. without sophisticated laboratory equipment to evaluate a product, one 'rolls the dice, and takes a chance'. I chose this manufacturer. After using the product three times now for 2-4 hours continuously I can say that the fit and seal were very good; nose clearance to mask, very good; ease of taking a breath, while holding palms over 'exhaust' ports, excellent; ease of breathing out very good. I did find that I had to adjust the back strap 2-3 times to find the best position for ease of head movement. Even when loose the seal remained very good. One mask had a manufacturing problem when the package was opened. This is something that the Seamstress or Quality Assurance Inspection should have caught. I contacted the seller. In approximately 48 hours I had a replacement. This is excellent response and Turn-Around. To 'cut' the Mfg some slack, even in the very best "ISO-" Facilities errors do happen, though very rarely. Since I don't know what their Defect Rates are or Returns are, they get a PASS, and Excellent Customer Service. The only problem IS NOT PRODUCT related. If you place on going to any Medical Office or Facility. DO NOT WEAR it. As soon as I entered the building, while having my temperature scanned, I was instructed to remove it, because the exhaust air is not filtered. I said I was unable to get any seal with a disposal mask (blue type), any kind. The response was they cannot permit the use of any mask that has ports, even if the ports are "PM 2.5" filtered since they are not approved for medical use. So, I asked what about me breathing and exhaulting unfiltered air? They said they wete sorry. I asked if I could wear the Blue Mask under my mask???? No, I'm sorry. In the non-hospital complex, I saw all kinds of "filtering devices" being used, from "Scarf" types [filters ~57% of I/E air] to Hospital approved 'fitted masks [filters ~87% I/E air]. So far, this type mask appears to be the best mask out there as long as: THE WEARER MUST BE/IS VIRUS/BACTERIA FREE TO USE AN UNFILTERED EXHAUST MASK for the welfare and safety of others. My bottom line - Great product so far. And, I will wear an "unfiltered N95 or N99 mask when going to any medical building of hospital. (Note: In one instance even that was not good enough. I had to throw this type mask fo a "blue mask". Their reason, (A valid one), they did not know where, how many times used, or 'cleanliness' of hands when touching it. This mask and THEIR filters get a 5 & 5.

This is my 3rd!!! mask purchase. I cycle, both indoors and outdoors. I need an N95 capable mask to cycle indoors and that's assuming the cycle studio I wish to use has taken appropriate mitigation measures to keep riders safe. It has (CycleBar and Dynamic Cycle).T he first two attempts at high performance masks produced (1) the mask never was delivered (I got a quick refund from Amazon though). (2) Terrible fit (no ear loops) and bad seal at the top and bottom. Almost impossible to effectively inhale at high respirations rates. The Base Camp mask is a perfect fit on my face - seals at the top and bottom of the mask (works for my wife who has a smaller narrower face if you follow the cross the straps instructions). Very comfortable. Easy to inhale and exhale at high effort/respiration rates when cycling. Huge advantage for me. In the new normal, if you want to have some normalcy in your life while protecting yourself from infection with both droplet and aerosolized SARS-COV-2 containing particles, you'll need a properly worn mask that fits correctly with N95 level filtration. This one fits well enough to serve that purpose and I have no reason to doubt the N95 certification when using the filters.

This is good mask at this time, primarily because of its high quality replaceable filters. Since most "blown" (non-woven) filter material production has recently been shunted to private medical suppliers, this mask/filter combo seems to be one of the few remaining sources of high filtration masks/filters for the public. The filter layers are designed and technically capable of very high particulate and ozone filtration percentages. However, IMHO, the design has significant limitations: First, masks with outflow valves do not provide optimal source protection. They primarily protect the wearer from other sources. That means if the wearer is a possible source, this mask should probably not be a first choice. The wear of outlfow valve masks may be seen unfavorably by those who know the difference. My personal practice is to wear this mask with a fabric neck gaiter, which I can pull up to cover the valves in public. Second, it is one-size-fits-most. Since mask effectiveness is completely dependent on fit, even a mask with great filters, like this one, may still not be effective for you without modification. Since this mask only has a neck strap and tends to slide down off my nose (even after adjusting the nose clip), I run an additional velcro strap through the ear loops to make a head strap. Wear a baseball cap if you want to hide the strap. Self-adhesive rubber weather strip material (1/2 x 1/4 inch) can be applied as needed inside the shell to improve seal around the nose and upper face area. Even if the metal nose clip comes loose from the shell (it is easily damaged during machine washing), a combination of velcro and weather strip can keep the mask fully functional. IMHO, if you can get a good fit, this mask is better than a commerical industrial valved N95 (which is currently unavailable to the public). Here's why: First, the commerical products are disposible and are typically unusable after a few hours of work. With this mask shell, filters can last for a week of heavy daily use because they never touch my hands or have direct contact with the work environment. Second, the outflow valves are larger than on a commercial mask, resulting in a mask with much easier exhale and less heat/moisture buildup (suitable for strenous exercise/work). This also makes the filters last longer. The shell should be hand-washed only, after removing valves and filters, to prevent damage, especially to the nose piece. Replacement outflow valves should be ordered separately if you plan to use this mask as your primary protection. The valve pieces are easily misplaced or lost when removed from the shell during filter change and washing. The mask is not functional without these valves. My suggestion is to order 2 extra valves for each mask. Since each Base Camp mask has two outflow valves, if you want to replace both of them (or to have a complete pair of two spare valves), you must order a quantity of 2 items. Although the valve is not difficult to replace, there are no instructions included. Supplier pictures indicate that a single silicone diaphragm must first be mounted on the inner valve section, properly seated over its center post and oriented with its concentric ridges forming a slight outward facing-cone. The filter replacement procedure is also the basis for valve replacement, remembering that the inner valve section must be inserted first through the filter and mask outflow holes. Once in place, the outer valve section must be seated and turned a full 90 degrees clockwise to lock into the inner section. To direct outflow in a specific direction, the inner section slots must be correctly aligned relative to the mask prior to attaching the outer section. For example, if you want valve outflow to be directed downward, the inner valve section slots must be aligned vertically, and then the outer valve tabs seated so that the outflow guides appear to be facing forward. After full 90 degree clockwise rotation to lock, mask outflow will now be directed downward.

If you have a big head this is not the mask for you. They need an XL size version. Seems like a well made product and functional, just too small if you've got a big head.

LOVE THIS MASK! This mask is the new version that replaces the one Basecamp sold prior to 2020. I had picked up the original style for mowing the yard (pollen allergies). It was perfect when the pandemic started. However soon after things escalated you could not longer get these masks nor the authentic basecamp filters. I had enough to make it through till this new style was available. I was so pleased with original mask that I bought this new version as soon as saw it was available. I have recommended it to many co-workers. I have to wear a mask at work when around others. I have worn it for hours on end and it remains comfortable the whole time and causes ZERO sore spots. I have even worn it to the junkyard for emergency parts pulling and it was not too hot. The adjustable bendable nose piece allows you to get a good seal. I have even perfected wearing glasses without fogging them up! :) This mask is breathable and does not trap alot of heat. Yes you still get a bit of humidity build up, but its a negligible. The vents do their job perfect. [I would recommend that if you are ever around anyone who is super high risk that you might get those cheap thin surgery masks to layer over the vents to offer them better protection, (like my 105 year old Grams)] This mask is a great fit and does not slide about like many of the other masks. It offers ear loops & an adjustable strap that goes around to the back of your head. This mask is unique in that way and allows a ton of adjustability. Once you get it fitted you do not have to fiddle with it at all! :) My only issue is that I have a small head. ( 6 & 3/4 hat size.) I wear youth hats. Any adjustable adult hat always covers my ears & the one size fits all falls off if I turn my head fast. LOL. So I made alterations to the mask to make it a wee bit smaller when I got it. Please check out my pictures to see how it did it. Before I would have the mask fitted to my face and wrap the head strap, but the Velcro would overlap so far it would not adhere. With my adjustment I get a perfect line up with the Velcro now. I am very pleased with the mask and highly recommend them. I bought one for me, my mother and 105 year old Grandmother. Everyone is super excited with their mask! Thank you BaseCamp!

I wear these when I'm grooming and it's a game changer. Great quality and they are durable!

Wish I would've bought this product sooner. Was surprised to notice three masks and a large stack of fresh filter replacements. Feels great on my face to the extent I'll start using this for allergies while biking in addition to standard pandemic protections. Note: This fit great on my face (6'1" 180 lbs) but did not fit on my girlfriend's face very well (5'9" 150 lbs) because it was a little too large and the behind head strap wrapped too much leaving extra velcro exposed. If she had one size smaller, it would've fit her too.

After waiting weeks for these to arrive, I am ready to send them back after only one use. These masks are just designed wrong. The way they are made, there is nothing you can do to keep them from falling off your nose. I had to walk around the store holding my mask up with one hand to keep it from falling off. Even pinching the nose piece down so hard I could not breathe through my nose, it still fell off. The issue is the strap that wraps behind your head. This strap puts tension on the bottom of edge of the mask and pulls it downward. The ear loops are not tight enough to hold the mask up against the tension caused by the strap. If you do not use the strap, the mask just pulls away from your face leaving a huge air gap, defeating the purpose of the mask. I even tried wrapping the strap under my chin like a helmet strap and this worked to prevent the mask from falling down, but it pulled the ear loops off of my ears. My wife and son used the masks and had the same exact problems with them. They immediately refused to use them anymore because they were so much of a hassle, and my wife is a huge proponent of wearing masks. I don't know if I can do an Amazon RMA on these, but I am going to try. These things are a really bad design. It is sad because the mask part is actually comfortable.

Very good mask as specially working with sanding protected my mouth and nose good

Arrived on time, I found this mask very comfortable to wear, easily adjusable, and the best part is that it does not fog up glasses or protective eye wear!

Bad fit, the straps and ear hook should be more adjustable

Easy to put on but again just a bit small

Too expensive for whats esentially glorified cloth over a regular N95 mask