TETON Sports Mountain Adventurer 4000 Backpack 1138
TETON Sports Mountain Adventurer 4000 Backpack 1138
TETON Sports Mountain Adventurer 4000 Backpack 1138
TETON Sports Mountain Adventurer 4000 Backpack 1138
TETON Sports Mountain Adventurer 4000 Backpack 1138
TETON Sports Mountain Adventurer 4000 Backpack 1138
TETON Sports Mountain Adventurer 4000 Backpack 1138
TETON Sports Mountain Adventurer 4000 Backpack 1138
TETON Sports Mountain Adventurer 4000 Backpack 1138

Mountain Adventurer 4000 Backpack

Sale price$149.99

Incredible views and remote trails are just some of the rewards that await you when you’re hiking in the wilderness. And because hiking can push you to your limits, you need a backpack that can keep up w... + Read More

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Incredible views and remote trails are just some of the rewards that await you when you’re hiking in the wilderness. And because hiking can push you to your limits, you need a backpack that can keep up with you and your latest adventure. The Mountain Adventurer 4000 Backpack was designed with you in mind. This extra-large, rugged backpack is fully adjustable, built for comfort, and has plenty of room for all your gear.

  • Adventure-ready 66-liter backpack
  • Internal frame
  • Exterior and interior gear loops
  • Sleeping bag compartment
  • Removable hood
  • Compression straps
  • Neoprene sleeves for rope, etc.
  • Lifetime Warranty


  • Wrap up their next adventure!

    Holiday Deals

    All TETON Sports products are backed by a limited lifetime warranty.

    Built TETON Tough

    Our Lifetime Warranty

    All of our products are backed by a limited lifetime guarantee. Our products are built to withstand whatever nature throws at you, but rest assured, our warranty will help get your gear repaired or replaced if anything goes wrong.

    Product Reviews

    4.5
    Rated 4.5 stars
    Based on 2 reviews
    Total 5 star reviews: 1 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
    100%would recommend this product
    2 reviews
    • JW
      Joey W.
      Verified Buyer
      I recommend this product
      Rated 5 stars
      Oct 31, 2022
      great pack

      Just relieved this pack, feels like great quality material. I cant wait to use it!

    • DT
      Daniel T.
      Flag of United States
      Verified Buyer
      I recommend this product
      Rated 4 stars
      Jun 2, 2021
      4 Stars

      I was torn between the MA 4000 and the Explorer 4000. I decided to get this one because I live near Lake Tahoe and think it will be better for the snow and wet climate. The bag material feels very durable. But who cares what I think. I drug it through mud, rocks, on exposed rock cement and washed it off with a hose and to my surprise no damage. A little white left over from the cement but only aesthetic. This bag will hold what you need. 66 liters is plenty and if you have more room you will just feel the need to fill it up. The pockets are fine and stretch well to hold your water bottles and whatnot. you can enter the main compartment from the top, back and a small side pocket. The bottom of the bag can either become part of the large bag making it deeper or be zippered off to make a separate sleeping bag section. It should be noted that by sleeping bag I mean a extremely compressible "down" bag or quilt. If you use a standard or synthetic fill mummy bag 99% probably will not fit. I really think the bag is constructed well but it will be a little difficult to adjust the height adjuster if it has slipped out of its bracket like mine was when it arrived. Once fixed, it rides well and has a nice fat comfortable hip belt. You are not buying this for your "Ultra Light" kit, you are buying this because it is rugged and when you get to your camp site you can huck it on the ground and not be afraid that when you pick it up all your stuff will fall out of the rip in the bottom. Now,…

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    Enjoy life outdoors: TETON Story & Values

    Enjoy Life Outdoors

    We believe the outdoors is there for everyone to enjoy. Whether you're blazing a new trail or just want to add a little fresh-air time to your hectic schedule, the outside world is waiting for you. We make the gear that will get you there.