BackTpack Basic 3.1

(5 customer reviews)


A basic ergonomic carry bag that trains good posture with side-bags that balance loads on the body’s vertical axis. Ideal as a school bag or travel bag. Fits older children and adults.

SKU: BTP3-1 Category:
Brand: BackTpack


A basic BackTpack for children and adults. An ergonomic side-bag carrying system that balances loads on the body’s vertical axis and trains good posture. Provides convenient access, comfort and security, making it ideal as a school bag or travel bag.

In 2 sizes to fit older children and adults

  • Small: For small framed adults and children age 6 and up. Fits shoulder width less than 16 in. (41cm); Hip circumference less than 37 in. (91cm)
  • Medium/Large: (This size is unavailable in this model, but is available in the BTP 3.0 model and the BTP 4 series fits all sizes.) Fits shoulder width greater than 16 in (41 cm), Hip circumference greater than 37 in (91cm). 26% greater volume capacity than small size.

Click here for comparison of BackTpack models

Click here for BackTpack features

See Fit & Use Instructions for BackTpack Basic 2, 3.0 & 3.1

Two large compartments, one on either side

  • Rip-stop fabric
  • Padded bottoms and side panels against your body for durability and comfort
  • Briefcase handles for easy carrying by hand, with snap fastener for holding handles together
  • Sleeve for optional-use hip-loading belt
  • Heavy duty construction; bounce tested with 50-pound load for 48 hours

Multiple pockets inside and out

  • 1 exterior cell phone pocket
  • Pen pockets inside each compartment
  • Large zippered pocket inside each compartment
  • Large open-topped pockets against body
  • Small outside pockets on the right and left
  • 1 exterior bottle holder
  • Velcro or snap closures

Adjustable shoulder straps

  • Padded for comfort
  • Secured in place by an adjustable sternum strap, so they never fall off your shoulders

Adjustable LAP-STRAP

  • This unique feature is essential for spinal health because the spine is already compressed in sitting and should not be loaded further. When you sit or squat while wearing the bag, the LAP-STRAP immediately transfers the weight of the bags off the shoulders and spine and onto the thighs without having to remove the shoulder straps. This prevents unhealthy load-bearing through a flexed (rounded) spine.
  • Allows bags to remain accessible at your sides if you choose to remove shoulder straps while seated.

Briefcase handles

  • Fastens together for easy transport when not worn, and to prevent the side-bags from getting twisted.
  • Snap fastener

Hip-loading belt

  • For long-distance carrying, heavier loads, or for certain types of spinal pathology. NOTE: For greatest postural benefits, we recommend carrying most of the weight through the shoulders and spine so that the body knows to stand tall against that force.

Headphone port

  • One on each side-bag

Hang loop for storage on a hook

Key fob

Loop on back panel for attachment of safety reflector or bike light

Additional information


In sizes for kids and adults from 4'0" (122 cm) and up depending on body build. Small: Fits most small-frames people age 6 and older. Fits shoulder width less than 16 in. (41cm) and hip circumference less than 37 in. (91cm). Medium/Large: Fits shoulder width more than 16 in (41 cm), Hip circumference more than 37 in (91cm). For questions about fitting, please call us at 503-365-7554.

Bag size

Small (Model 3): 13 x 13 x 3 in. (33 x 33 x 7.6 cm)
Small (Model 3.1) 13 x 13 x 4 in. (33 x 33 x 10 cm)
Medium/Large: 14 x 13 x 3.5 in. (36 x 33 x 8.9 cm)

Max. laptop width that fits

Small (Model 3): 13.75 in. wide (35cm)
Small (Model 3.1): 14 in. wide (36cm)
Medium/Large: 15 in. wide, (38 cm)

Volume capacity

Small (Model 3): 507 (8.3 Liters) per side-bag, 1014 (16.6 L) total
Small (Model 3.1): 675.5 (11.1 Liters) per side-bag, 682 (22.2 L) total
Medium/Large: 637 (10.4 Liters) per side-bag, 1274 (20.9 L) total


Small (Model 3): 1.81 lb (822g)
Small (Model 3.1): 1.72 lb (780 g) + Optional-use Hip-loading Belt 0.09 lb (43 g)
Medium/Large: 1.83 lb (829 g)

5 reviews for BackTpack Basic 3.1

  1. Sister Hilda

    After wearing my BackTPack, I will never wear a regular backpack again. After two years it shows minimal wear and tear, and I have used it every day. I have used it for my mile-long walk to work, for travel to art lessons, and as my only luggage on plane trips. I love it!

  2. Queen Ladybug

    After wearing/using my BackTPack for one day, I have noticed a significant reduction in pain associated with carrying a handbag/purse and materials for work. Previously, I used/would carry a purse and backpack. Quality material and assembly….worth the price!

  3. Tom Keating

    I bought the BackTPack several years ago and have used it as a work bag, travel bag, and bike bag. It works. It’s lightweight yet really durable. Over a period of years the only significant issue was a chest clip that needed replacing and the company sent me one as soon as I told them about it. The thing I like the most though is the fact that it’s really helped prevent some back and shoulder problems I was having that were in good part due to carrying too heavy of a backpack. The way the BackTPack balances the load and avoids stressing my shoulders is awesome. And it works great as an airline carry-on because it holds a bunch of stuff but still fits really nicely under an airline seat. Sweet.

  4. jaxgkay

    I love my BackTpack! It has improved my life in so many ways. You don’t realize just how much of a difference it makes until you transfer the items from your traditional backpack into the BackTpack. It’s equivalent in weight and yet it it feels so much lighter! There are times I hardly even notice it is there. I have used it for 3-4 years now and it is showing no structural wear. This is truly amazing!! I mean seriously! What products out there in this day and age last longer than 2 years? Especially with daily use/abuse! I’ve loaded up the bag to the brim and ran with it on and… well… lets just say I have no doubts in the “Bounce tested for 48 hours” claim. I just bought two more bags because I want the upgrade to the BackTpack 4 and a different color, not because I need to replace the bag any time soon!

    I really cannot say enough good things about this bag. It takes a little getting use to at first – you have to get the knack for balancing the two sides of the bag – but once you get a feel for that, your life can begin a new chapter! Just kidding, that is a little too dramatic, but seriously! Buy this bag!

    You can also wear a backpack with it too which I think is pretty cool. I haven’t had to do this very often but it has come in handy a few times when I have had to carry more than normal.

    Lastly I just want to say how much I appreciate the customer service. I ordered up two new bags and Marilyn emailed me back alerting me to a Canadian distributor that would allow me to avoid the considerable customs costs! I don’t know about you, but I get tired of being taken advantage of as a consumer so it is nice to see someone that cares! In my opinion, everything from the design to the lasting quality of this product shows care and consideration! Maybe I am going overboard with positivity on this product, but I don’t care! Buy this bag and then tell everyone you know to buy one too!

    Jaxan Kay
    – Daily BackTpack user for 3-4 years.

  5. Allison Asbjornsen

    I am in process of ordering a third Back T Pack…I gifted a pink one to a friend and I miss it
    When I discovered that magenta is available … YES
    I must have this! Way too COOL!
    Until you have used this bag you will not know how comfortable it is
    Try it!!!
    and how about this Tump Line Trainer!
    just a fantastic way to train posture improvement.
    Thank you Marilyn.

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