The size is perfect for either a day hunt or 3-5 day hunt.
My biggest complaint is at the top and middle of the vapor pack. Absolutely no support to hang a water bladder. The zipper that’s zips the wrong way for a load on the sides is all you get. That zipper wants to pull down and be under stress.
I would of added a couple loops up high on the outside of the pack and have the ability to strap it to the top of the modframe.
I wish the inside had mesh pockets all over and zip pockets for the smaller items. I don’t want to add weight with small, medium and large bags inside my bag.
The photos online don’t do justice

Got the frame and pack deal right before an elk hunt. My old pack wasn’t gonna cut it. Put it to good work a few days after getting it. Very impressed with the frame and pack. Fits great and is very light weight. Keeps weight where you want it and makes it not suck as bad. If you are in the market for a frame pack I don’t think you’ll be disappointed with these guys.

Spent 4 days over 11,000 ft Elk hunting. This pack was comfortable and evenly dispersed the weight of the pack on long 8 mile days averaging 1300' of elevation gain. Highly recommended. I have had both shoulders and left hip reconstructed and this pack was amazing.

Got this bag and immediately took it on a backcountry elk hunt, k packed in with 60 pounds on my back and around hunting with probably 20 pounds the days we were hunting and the bag never missed a beat. As a new backpack hunter I was pleasantly surprised with just how easily you can pack 60+ pounds in this bag and hardly even feel it once it’s on your back will be using the pack and frame many times again

Having the ability to scale up and down based off the needs of the day with an underlying battle plan in the event of kill is a game changer. I rock a vapor with bat wings on the inside for compartments on lighter days and then on the outside zipped to the frame and attaching to the vapor if it’s a more bulky day. The void behind in that setup is a nice added area to stash heavy layers. I cap it off either way with the lid. Do yourself a favor and learn the “double buckle” system setup and buy the field buckles and (3) additional straps to have it preset on your Mainframe for you when you need it. When you’re hauling meat it is as secure as it gets that way.

Nicely built. Very nice system over all. Like ability to expand storage at top of pack.

Bought the Vapor 2500 to mate with the Mainframe, 2 bat wings, and the tactical weapon scabbard for the 2025 Mammoth Sniper Challenge and I could not be happier. This system is anything you want it to be according to your needs.

Because of the intentional design for modularity, I’ll be able to use this for shooting comps, hunting trips, and backcountry hikes and no longer have to have 3 separate packs.

I was initially concerned about the zippers; however, I have loaded this rig with probably more weight than it was intended to carry, and there hasn’t even been so much as a stretched seam. So don’t worry about the zippers; they’re stronger than belief.

The mainframe carries well with no rubbing, and has the perfect amount of padding. The best is fantastic; it is thick enough that it doesn’t dig into your hips and balances wonderfully. For a size reference, I’m 5’11”, 180 pounds, with a 31” waist. I only mention that because it always seems like the belts on other packs don’t quite get small enough for my waist. The belt has plenty of room for adjustment for skinnier or thicker folks.

I’m really happy with this pack and based off my initial impressions and some hikes under load, it seems like it is going to be perfect for my needs well into the future.

Haven’t had a chance to use it yet. But have attached to my pack and the quality and fit are top notch. Be using Eberlestock products for years and have yet to be disappointed.My family all pack in to the back country and the packs have always performed without a hitch.

I finally got fed up with the cheap backpack straps my climbing stand came with and treated myself to this tank of a frame pack. First time loading up all my gear it was laughable that it took me that much suffering to finally pull the trigger on this pack. Wish I would’ve bought this thing YEARS ago. (Picture is first time strapping my climbing stand to the pack. I wedge my bandit pack in there and clip it on with a carabiner and I’m right as rain).

The Mainframe is a very well designed pack. Without the other EMOD components/options, this packet can and does stand on its own.

I found the shoulder straps and waistband to be more comfortable than other packs I have owned or used. All the adjustments (shoulder straps, distance between shoulder straps & waistband; waistband) allow you to adjust the pack to you and your preferences. I could wear this pack all day without feeling like I needed to stop and take it off. Even when I had it loaded down with an entire deer, I felt like I could have hike for hours longer without needing to stop because the pack was uncomfortable.

As a day-hunt setup, I paired the pack with two Batwings v2 and the Scabbard. The Batwings provided enough space and room for more. I used them to carry extras layers, hydration system, game bags, field dressing kit, emergency items, and food. They have plenty of small pocket to place those little items for easy retrieval. I was a little hesitant about the scabbard; namely the ability to retrieve and return the rifle without taking the pack off. These worries quickly disappeared after using it in the field. I found it easy to pull my rifle and return it with ease and not cause a ruckus when doing so. The Scabbard was also a life saver when both hands were need during steep ascent and descents. Not having to hand carry or sling carry my rifle was a feature/ability I didn’t realize is a must.

I will be adding other pack options to my EMOD for longer hunts or hikes.

I just completed a 6 day hunt in Kodiak, AK and my Eberlestock kit made my life significantly easier to complete difficult movements in relentless terrain. My kit is extremely comfortable, which supports all day hunts with a medium load (40 lbs). Eberlestock has mastered organization, which allows fast and easy accessibility to items. The rigidity of the frame is key for enhanced comfort because it helps distribute weight evenly, preventing pulling to either side or back.

My next purchase will be the Recon Modular Harness System and accessory attachments.

The open frame concept is new to me, but makes the most sense when hunting. I've always liked internal frames on my packs, whether hiking or military use. The idea of the mainframe being versatile was really convenient for this hunting season in particular because I was hunting offthe back of a dirt bike.

To start, I like the scalability of it. Adding only batwings wasn't quite enough, so I needed more space. By the time I figured that out though, it was the day before leaving for my hunt and I just didn't have time to get the additional lid, so I retrofitted a lid from a hiking pack that I already had. That'll be a future addition. Being able to add a normal pack to it will be nice though too, for when I backcountry hunt. Being able to drop non-essential weight and run just the frame and a couple pouches to manage game is really nice.

Getting the whole kit pulled tight and compact was great when adding a bow to the whole package. The frame was really sturdy, as expected. Better yet though, it fit me really well. The shoulder strap adjustment was ample to get a great fit for my torso. The padding was comfortable and didn't make me sweat excessively, so great ventilation. It was honestly the least worrisome piece of equipment I had. Which was a huge relief, because some of the single track in Idaho is hard enough just for fun, but adding the extra weight and dynamic of a bow and pack hanging off your pack can be a whole new challenge. The way the frame fit me, it was almost not there. I picked the shorter of the two frames available, so I had lots of clearance at the top for low clearance areas. The bottom of the pack didn't stick out too far either, so it never interfered with moving around on the seat. I was still hopping downed trees and large rocks like normal without adding anything to the equation. Because of all that, packing out also didn't create a huge challenge other than a little extra weight to balance, but that's a task that falls on me and not the mainframe.

Only pet peeves are: 1) The outside corners of the shelf are exposed, so when I sat down with rocks that were a little tall, it scraped off paint and made excess noise. Not a huge deal, but now it's scratched up and I have exposed metal to watch over time. B) The cummerbund could use some elastic bands at the hemmed end of the tightening straps to roll up the excess strap when fully snugged up. I sat on the excess a few times and tugged at it while trying to ride. Fixed with tape, but a few inches still dangle. It also aggravates my 'tism from the military with having unsecured straps. They're an actual hazard, though admittedly I was using it in an unorthodox manner.

Overall, solid kit. For the one week that I had it, it was exactly what I needed. Day packs are great, until meat pack out. Expandable packs are great for pack out, but someone's they add too much weight and bulk when you don't need it. The mainframe fixed both of those "issues" and was actually really convenient from atop a dirt bike. Bravo, gents.

If you’re looking for a good Shedhunting pack that can hold some weight, pack some horns, and camp gear.. look no further.
Only thing I wish was if there was the ability to access the frame for bungees. This pack is the most versatile and best pack I’ve ever used.

The design of this frame and the different configurations intrigued me. I decided to give it a shot and that was the best decision I've ever made. The lumbar support on the harness is insane and makes weight easy to carry. Great support going through your back as well and good ventilation in the back. I really like the webbing on the hip belt as well, it makes it easy to attach a small accessory pouch, medic pouch for quick access or even mount a handgun. I picked up the Vapor 5000 with it and a Batwing shortly after. I love how within 2 minutes I can completely refigure my pack for a back country hunt or just a day trip to do some scouting. Due to the versatility and great design, I think this is a frame every hunter / backpacker should be running.

I have used this pack for many heavy ruck journeys. Recently, I took this pack to the Bataan Death March carrying 40lbs+. Marched a total of 26.56 miles and had no issues with the pack. This pack did phenomenal, I added the batwings to my pack and they held up very well. Best pack money can buy. This company stands by their brand.

I am 5’10 and purchased the tall mainframe to gain an increased angle in the load lifters. I was able to get a good fit by dropping the harness to the lowest setting and purchasing the padded hip belt. I like the modularity function of the pack. Purchased the Vapor 2500 for one to overnight outings. Plan to get the Vapor 5000 for extended hunts.

I was able to carry all my gear with a climber stand all on this frame comfortably!