Im happy to now offer fan systems for your helmets. I am using quality products that have been tested to last. I have this system in my helmet and I absolutely love it. What's Included: 5v System: $45 Shipped (in the US) - 2x Squirrel Fans, 1x Battery Pack with on/ off switch (takes 4 AA batteries), 4x Mounting Hardware Sets, and Industrial Velcro for mounting. 12v System: $65 Shipped (in the US) - 2x Squirrel Fans, 1x Battery Pack with on/ off switch with quick disconnect (takes 8 AA batteries), 1x Quick Disconnect at the helmet, 4x Mounting Hardware Sets, and Industrial Velcro for mounting. ***The battery cable length is long enough to place the pack in your pocket and run it up to your helmet where the quick disconnects are. Everything comes prewired and ready to use. Instructions are included on how I'd recommend mounting the fans with the hardware that's included. ***For international shipping contact me and I'll quote you based on your location. I can make a few options available. For those who are interested. I can add cable length or shorten if needed. I can add a switch inside the helmet if needed as well. PM me for more info on these systems. I take PayPal and can have them ready to ship within a week of payment.