So i have been running Dye i4 masks now for nearly 2 years for airsoft both in CQB and woodland, i have two masks, 1 for woodland in a sort of faux Multicam pattern for woodland and the other was a Dye i4 in Onyx Black and Dyetanium gold lenses for CQB.
The first mask i wore was the Woodland one at Dragons Lair Airsoft when i first got it and within the first 30 to 45 minutes its fogged on me, the marshall himself was puzzled saying that that should not happen, i was wearing a hat covering the upper vent holes.
The Second mask i wore was the Onyx Black one at The Mall in reading and it fogged on me, again i was wearing a FAST helmet covering the vent holes, i also had to rip out alot of material from the helmet to get the Dye i4 mask to fit seemlessly.
I though that this should not be happening on what i considered to be expensive masks that were touted as fog proof, also the ball ache of trying to fit a Z-Tac BOWMAN 3 headset, then Dye i4 Mask, then helmet was also becoming too much.
I looked around for fan solutions but they all proved to be bulky messes such as needing a large battery pack strapped to the back strap which would foul the FAST helmet adjustment strap.
In the end i knew that the only thing possible would be a custom built (jury rigged) system done by myself so now i have the following:
Each of my Dye i4s have
1 x small 15x15x4mm SEPA fan mounted above the vent holes in the centre, with an on/off switch powered by one small 300mAh 3.7v LiPo battery. I initially built the fan assembly, then stitched in the fan to hold it in place before using a hot glue gun to permanantly hold it in place, the battery is tucked into the head strap on the right side of the image where the red battery connector is.
1 x disassembled Z-Tac Bowman 3 headset fitted into the mask and its straps. I hot glued the mic in about the centre of the mask and tucked the headset ear piece in the strap, it does not line up with my ear 100% but i can still hear team mates and the world around me.
1 x Wide-i Echo magnetic lens cleaner, this is a small magnetic attachment and works very similar to a magnetic aquarium cleaner. Works pretty well and i have never seen it drop of by itself. It is my last line of defence against fogging.
I also carry a small battery powered fan to force fresh air into the mask during down times to combat fogging, it helps cool you down, although the wife stole one of mine to use on her daily commute during hot weather.
https://www.amazon.co.uk/gp/product/B017HHX7US/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1
Also i tried to wear the masks with a black helmet that i had with a multicam cover and a helmet with Kryptek Typhon printed on it, i found that the black helmet would not fit with the Dye i4 and the Kryptek Typhon did without removing any padding, no issues. Could not figure it out initially but then i saw it.
The front lip of the black helmet was about 5mm or more thick yet the Kryptek Typhon only had a front lip material thickness of 2.55mm hence why it was fitting well, i eventually found a multicam printed helmet with a front material thickness of 2.55mm
and now that fits perfectly, there is still a tiny gap but its small:
Also i have not experienced fogging for such a long time that i have forgotten about fogging, it only cropped up recently again a few weeks ago one weekend when it was exceptionally rainy (humid) and the mask fogged only at the end of a hard and long game day.