I needed a new pack, my Alice pack just wasn’t cutting it. I spent nearly 6 months investigating and reviewing, listening to guys I work with talk about all their gear “You need X pack from X or you’re gonna regret it.” They had $600 packs from other companies. I decided to buy the F-1 based on a video I saw on YouTube. So I took the plunge, got the frame and the batwings for starters. Got it home, fits like a glove. I hike 3 times a week with up to 50 pounds for 4-6 miles in that pack at 7000’ in New Mexico. I’m a fit 51 year old and it’s the best piece of kit. I would tell anyone to investigate because there are several good brands out there, BUT, I love the modular system and ability to flex my options at a moment.

You will never need another bag. The 7500 is an absolute beast! If you are questioning it, don’t..

Very well thought out and durable frame Seemed similar to an alice pack but so much better and comfortable Adjusting the lumbar support and shoulder straps is a breeze. Fits nicely with the G1 Little Brother. I Just wish I had one during my camping trip last fall.

F1 Mainframe

Heavy loads feel comfortable. I'm 6'2" tall, and weigh 235 lbs. The pack will adjust to fit me perfectly. F1 Mainframe for the win.

I purchased an F1 mainframe with Vapour 7500 pack and waterproof scabbard. I just used it on a coastal black bear hunt in BC to haul 70 pounds of black bear meat up a 200 meter steep embankment in one trip. I was able to carry my rifle at the same time in the scabbard to keep my hands free for scrambling. It was very convenient to separate the pack from the frame and switch it to a meat hauler. My hunting partner was impressed that I was able to carry so much up a steep embankment and make it look easy. Even better, I had no issues with a sore back or other lifting-related pain. I am 6 foot 1 and went with the tall version which I think I would recommend for anyone regardless of height for the additional load lifter spacing.

A back frame that fits my tough apparently weirdly dimensioned body. Finding cloths and gear is always a challenge but the adjustments on this frame makes it feel like it's apart of me, thrilled!

I have only had the pack for about a month and I already love it. Put my 7 1/2 year old on the frame and hiked him around shed hunting. We were both extremely comfortable. Wish I would've upgraded years ago. Cant wait to pack an animal out and really test it.

This frame is bad to the bone. My fiance sits on the meat shelf and holds on to the top handle and we go for hikes. If she gets sleepy just wrap a compression strap around her and your good to go. NO better way to train than with your partner and NO better way to get in shape then carry her around on your back. Especially when you live at 6,800 ft elevation. This pack gives no discomfort while carrying heavy loads. The pad feels good on my lower back and shoulders feel great. Perfect width and height so you aren't banging your head on it on accident and it's not sticking outside of your body. Plenty of straps and ways to customize. Can't wait to see how I have it set up this fall.
It's my second pack from Eberlestock, (my other is a whitetail day pack). This thing is exactly what you want for an everything in one frame. Super adjustable so it sits perfect on your waist and shoulders. Recommend !!

Mainframe is more comfortable than I imagined and seems very well built/designed