The Explorer 4000 is packed with features normally found only on more expensive backpacks. A full length adjustable torso allows this pack to be adjusted for those 5'1" all the way up to 6'4". The padded back and airflow system provides padding in the perfect spots while allowing substantial airflow to prevent your back from getting too hot. Its contoured shoulder, lumbar, and hip pads help ensure a comfortable trip. The Explorer4000 also features a padded water bladder pocket for your favorite water bladder up to 3 liters in size. Side zippered pockets, mesh pockets, and a top zippered pocket provide plenty of room for smaller accessories. There's even two spots for walking sticks. A top-loading main compartment and a sleeping bag compartment complete the pack. Includes bright yellow attached rain fly and is hydration system ready.
Technical Details
-4,000 cubic inches / 65 Liters; 5.0 lbs.
-Dual aluminum stays adjust to the contour of your back
-Padded shoulder straps, padded waist belts and padded lumbar area for maximum comfort - with airflow system to reduce heat
-Full length adjustable torso and adjustable shoulder straps for a more comfortable fit
-Separate sleeping bag compartment
See more technical details

"Kick Ass bag" 2010-07-27By
Kage (Buffalo, NY USA)
Very nice bag. I glad I did not get a bigger bag, 4000ci is perfect for a weekend trip. Anyways construction appears very solid. Its very comfortable although I only hiked around the house. The only complaint I have is like others, the sleeping bag compartment is small. I dont have my mummy bag yet, but when I get it I'm sure it will not fit. Looks like I'll need a waterproof compression bag and strap it to the back. There is also a bungie cord cover, covering the sleeping bag zipper to prevent water from getting in. This makes the zipper's on the sleeping bag compartment hard to open. All the others work free and easy.
Overall I love the bag so far. I got it in grey instead of blue because it was something like 30$ cheaper ... not sure why? The grey looks great.
"Buy This Pack!!" 2010-07-17By
Paul E. (Williamsburg,VA USA)
I have been looking at packs for a few weeks and decided to purchase the Teton Explorer 4000(Gray) because of the features, good reviews and bargain price. It arrived today and I'm not disappointed! The shipping box was in sad shape, dunnage was minimal and the packing tape was messed up but the pack was unmolested inside a plastic bag. That was the worse part.
The material seems to be of good, sturdy quality and I don't concur with some of the negatives described in other reviews here. The zippers do not stick, they open and close just fine. I did fit my Sleep Cell 30 degree mummy bag in the sleeping bag compartment no problem - I could even squeeze in a few wash cloths or other small articles if I had to. Yes, if you have a giant 5 lb bag, it probably won't fit here. The straps and buckles are very sturdy and I see no difference after comparing them to the straps and buckles on Kelty, Jansport or Northface bags I examined in stores. If they do break, Walmart sells buckles and straps for pennies - made by Outdoor Products. I will carry extra with me when I use it.
This bag has plenty of straps, loops (daisy chains) and pockets to carry everything you need. It even has a cinch strap above the side with the two pockets. It has a rubber backing to protect the bag and will cinch down your tent poles, walking stick or whatever you can fish down between the two pockets and bag - remember these pockets are pass-through which allows you to slip items behind them. The pack is very comfortable and rests on your hips very well. I did try it out packed full for an hour.
The lifetime warranty on the tag says: "... original owner only and excludes normal wear and tear (e.g., zippers that wear out after extended use) or misuse. If, after inspection, a product is determined by us to be defective in workmanship or materials, we will repair or replace it at our option, at no cost to the original owner."
I will give an update after I use it in the field.
"Great Backpack!!" 2010-07-16By
Marnie (WY, USA)
For a beginning scouter this pack got our son to camp and back. It is a very good size and he could pack most of his stuff in it. He'll be using it for years to come.
"I'd give it 3.5 if I could." 2010-05-11By
B. Dobson (Chapel Hill, NC)
I must start by saying that I've grown very fond of this bag. I've been backpacking and WWOOFing through Europe for over 9 months and I still have a few to go. This bag is basically my home.
Let's start with the pros. PRICE - quite affordable for a bag of its class. There are many convenient pockets and straps. I'm able to fit everything I need to survive. It's effectively waterproof and has the rain-fly thing for heavier rains. The material is extremely durable - hardly a scuff on it and not a single tear in any of the fabric (seams are another story; see below). It shrinks down alright when not fully stuffed. And most importantly, when adjusted correctly, it IS comfortable. This is crucial for me, as I've been doing a fair amount of hitchhiking and find myself walking 5-15km at a stretch if is lady luck isn't shining.
If it's got all of those pros, what cons could possibly drive me to only give it 3 out of 5 stars? The seams. Zippers, straps and buckles have busted seams. It started VERY early. Within only a couple weeks of use, the inner adjustable velcro strap that folds over the left-side interior aluminum back brace tore its top seam; the bag has sat crooked since then. The seam around the zipper on the bottom where the rain-fly is stored is giving way, and I've used that only a handful of times. After about 2 months of heavy use, the seam holding the buckle on the bottom right strap broke, as did the lowest of the four seams connecting that strap to the front mesh pocket area (I used these straps to hold my heavy coat when I'm not wearing it - I was able to reattach the buckle using duct tape, needle and thread). Luckily, none of these have been enough to put the bag out of commission.
One final minor annoyance, but not necessarily enough to detract from the merit of the bag, is that I wish rain-fly were slightly larger. I have to store my sleeping bag on top, and with the bag strapped up there the rain-fly simply doesn't cover it all.
In conclusion, I really do like the bag and I hope to get many more years out of it. But to have seams busting within the first month of use is unacceptable. Regardless, what's done is done. I will simply try my hardest to repair these issues when I get back stateside and have the luxury of actually emptying the bag of all its contents - a rather daunting task, I assure you.
"Not too bad" 2010-05-11By
Tom (California)
This bag will work perfectly for what I will use it for. It has plenty of adjustments and with a little work I got it to fit very comfortably with all my gear in it (total weight including bag is 42 lbs). Some of the straps are extra long, however I have a smaller build than average (5'10" 155 lbs) so some might find the longer straps to be convenient.
The sleeping bag compartment is just fine for the bag I use which is very compact (10"x8" compacted) but I even tested the fit with my friends bag which is larger than mine (12"x10" compacted) and with a little effort I got it in (took 30 seconds or so). Lay the pack on it's side, put in one end of sleeping bag and scrunch it in was the best way. Besides just because it is called a sleeping bag compartment doesn't mean a sleeping bag must go in it, most packs don't even have an extra compartment for your bag, so if it doesn't fit then it's just a pocket.
My only problem with the bag is that some of the plastic buckles do seem kind of thin for something that carries so much weight for long periods, but they seemed to be fine while I wore the loaded pack around the house (it does have a lifetime warranty for a little peace of mind). The netted water bottle compartments also seem like they might be a little small but I didn't have my bottles to check. I had my buddies take a look at it and they thought it was just fine, one of them said this bag is better than his and his has lasted for years. I wouldn't say there are too many straps, there are a couple compression straps, a couple luggage straps and the rest are for adjustments... really it has just the right amount of straps. We also inspected the stitching where it really matters and it seems strong and well placed.
If you need a decent bag for a 2-3 day trip then I say get this one, If you want the quality of an expensive bag then buy an expensive bag. There are better bags out there, of course you are going to pay a lot more for them, I had $70 to spend so this fit the bill perfect and I am pretty sure this is the best bang for the buck.
Read more TETON Sports Explorer 4000 Internal Frame Backpack