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About Mountainsmith Modular Hauler 4

2nds. Haul it, store it, organize it... if you've got a lot of gear, you need the Modular Hauler 4. Durable, Mountainsmith-quality ripstop nylon holds four color-coded cubes and stores easily in your automobile or garage. Great for road trips, too!


Specs about Mountainsmith Modular Hauler 4

  • Style: Duffel
  • Capacity: 7500
  • Carry options: Hand
  • Material: Polyester
  • Dimensions (HxWxD): 15x34x15"
  • Weight: 5 lb.
  • Made in China , Viet Nam


Do you own this product? Write a review and help others with their buying decisions!

4.333333 5 Overall Rating: 4.3 Based on 354 reviews

Most Helpful 5-Star Review

Perfect for a family of 4
Reviewed by Michelle@CrunchyInTheSuburbs from D.C. Suburbs on Sunday, July 21, 2013
This hauler is perfect for our family! Everyone gets a cube, and what fits, we take, what doesn't fit, gets left behind. Helps keep us from overpacking for trips. Initially we were sent the four cube things but the gray hauler case was the one that went with the modular hauler 3, but Sierra Trading ... Read More
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  • Perfect for lots of things!
    Reviewed by SarahBeara from Iowa on Wednesday, May 30, 2018
    I have the Modular Hauler 3 and 4, and then discovered there was a cooler cube too! They have been in use for several years, and show no signs of giving up yet. I have used them for camping supplies, luggage, doggie luggage, and food organizers on road trips, and I even took one cube on deployment to the Middle East. Since the cubes are tall and narrow, you have to pack a little differently, but I use some Eagle Creek packing cubes to wrangle the small stuff. When the cubes are in the hauler, it can be pretty heavy so I purchased a Mountainsmith shoulder strap. Let's just say it didn't last long, so now we use a carabiner to attach the handles together and then each person grabs a side handle. I would definitely buy again, but I doubt I will need too!
  • Great ski bags
    Verified Buyer Reviewed by Slrbs from Colorado on Monday, March 26, 2018
    This is the second MS modular hauler for our family. The first one served us for 5 years (and now will be for off season storage). What I like about the new bags (same size) is the material for the entire bag is the same, so much more durable. The old bags have a plastic top that ripped at the seam- fixable with basic sewing, but the current bags seem much stronger. When bags are full, it is a tight fit in the actual hauler- I do miss the side pocket the old hauler has, but that is a minor complaint. We use these cubes for our family to hold ski clothes, helmets, gloves goggles- fits nicely in car, easy transport and holds quite a bit.
  • Great for an organized family outing!
    Verified Buyer Reviewed by XPLORMOR from Vermont on Tuesday, March 20, 2018
    Ordered the Mountainsmith Modular Hauler 4 to help organize family outings. With our upcoming third annual trip to North Carolina to help celebrate my brothers Copper Barrel Moonshine anniversary, the timing couldn't have been better! We are a family of four and the individual bags are just the right size to pack for a week worth of clothes if packed carefully. I own several Mountainsmith bags and have had good luck with them. The Hauler 4 seems made well enough, I hope to get years of use out of these bags!
  • Very useful for family road trips
    Reviewed by bluemorpho from West Virginia on Wednesday, December 6, 2017
    We bought this about 5 years ago for a road trip, and each person in our family of 4 took a different color bag for his or her clothing and personal items. My 15-year-old still uses his bag as his primary suitcase. We were mostly car camping and sometimes staying in hotels. The hauler fit in our cartop carrier (a long narrow one designed for skis). Having our color-coded bags made getting in and out on overnight stops simple. Our bags have plastic tops with clear pockets. These are handy for a packing list, label, etc, or for keeping anything flat that you need easy access to. A couple of things worth noting: first, the handles are attached to the tops of the bags, and this is a weakness. Near the end of the first long trip, my (probably overloaded) bag split along the seam of the lid just above the zipper. This would be very hard to repair as there's not much fabric to work with to reattach the zipper, so that bag is now used for storage. I later found a same-colored, same-sized Mountainsmith bag on sale at an outdoor shop -- and the handles were attached on the sides below the zipper, a much more structurally sound design. So be aware that these bags don't (or may not -- don't know how consistent the product is) have the optimal design for carrying weight, and be careful not to overload -- or if you do, don't lift by the handle alone. Also as others have mentioned, the outer bag does not have any supporting structure, though when loaded it does keep things together. I've used it to corral other sorts of items besides the bags it comes with, such as folding chairs, sleeping bags and pads, tents. It also will fit a couple of cardboard cartons (bankers box or small moving box or apple crate size) and fits nicely in the back of a station wagon, making a secure place to hold grocery bags, etc. Overall we're pleased with the purchase, just a bit disappointed about the broken handle.
  • I want more!
    Verified Buyer Reviewed by norge from WY & CA on Tuesday, November 7, 2017
    I have three sets. I move from one national park to the other each season. These cubes have replaced all other types of duffle bags, and totes boxes for me. I'm impressed with how much I can put in one cube. I now have 12 cubes and one cooler. I plan to buy another set, just to have on hand.
    I bought my mother and brother a set for Christmas this year.

    Glad to see Sierra Trading Post continues to carry them and Mountainsmith continues to make them.

Question & Answer

Questions about this product? Get answers from community and staff experts.

  • “The pictures show two different models, is it the one with silver lid and net pouch.. or one with same color fabric top as body that’s now available? And are these seconds or overstock being sold. ”
    Asked by Beach Bear from San Diego on 6/19/2018 11:18:12 PM
  • “The pictures don't match the one shown in the video. Which one are you selling?”
    Asked by Griff from Star Valley, WY on 4/7/2018 10:24:24 PM
    • The one in the video is currently sold out. The item is the images is correct.
      Answered on 4/16/2018 5:14:50 PM by Product Specialist Greg from Sierra Trading Post
  • “Is this waterproof or water resistant? (or neither?)”
    Asked by Robinski from California on 12/16/2016 10:07:07 PM
    • Not sure of if it is technically water proof...
      I have used it is rain and over night boating..
      And inside were never damp or wet...
      Answered on 12/17/2016 2:05:41 AM by Vandý from Colorado
    • These seem to have some water resistance, but they are not specifically listed as either waterproof or resistant.
      Answered on 12/19/2016 10:35:48 AM by Product Specialist Greg from Sierra Trading Post
  • “Can you buy the Hauler bag only-no cubes? I bought several cubes a while back so thought It might be better to hold them together.”
    Asked by Rockin the Ice from Idaho on 12/8/2016 2:03:31 PM
    • We are not able to sell this without the cubes.
      Answered on 12/13/2016 12:03:16 PM by Product Specialist Greg from Sierra Trading Post
  • “Are you now selling the newest version or an older version?”
    Asked by Bargaineer from NJ on 10/28/2015 11:55:23 AM
    • We did not receive this item as a closeout, but as 2nds.
      Answered on 11/2/2015 4:41:47 PM by Product Specialist Greg from Sierra Trading Post

About Mountainsmith

Founded in 1979 by legendary outdoorsman Patrick Smith, the Mountainsmith brand has become synonymous with rugged, adventure-ready gear, including tents, sleeping bags, backpacks, fanny packs, trekking poles and the popular modular hauler system. For more than 35 years, Mountainsmith backpacks and lumbar packs have been engineered to meet the rigorous demands of backcountry adventure. Whether it’s an alpine climbing expedition or an easygoing day hike, you can trust these products to go the distance. Experience the difference for yourself, and you’ll quickly understand why Mountainsmith is fittingly represented by an anvil logo. Mountainsmith backpacks, tents and camping gear are simply among the most reliable on the market today.