Eastern Mountain Sports Erratic Daypack

Priced: $39.98 Rated:   - 4 stars out of 5 by 18 reviews.
Eastern Mountain Sports Erratic Daypack
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Color: Black
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Eastern Mountain Sports Erratic Daypack - Versatile and ready for any adventure the Erratic Pack is equally at home in the concrete jungle as the rainforest.

Country of Origin: Imported


  • Small top pocket, fleece lined to save your screen or shades


  • Padded ergonomic shoulder straps, removable waist strap, no sternum strap


  • Zipped front pocket with organizer panel and key fob
  • Large zipped mesh pocket in front compartment
  • Large main compartment with with big burly zips – go on, stuff it in!


  • Streamlined side pockets; there when you need them
  • Small mesh drop pocket on front, good for beanie and gloves


  • Side compression straps and bottom compression straps
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Average Price History: Price History
Review RatingNumber of Reviews
Cell Phone Pocket/Sleeve:Yes
Dimensions:19 x 14 x 6.5 in.
Hydration Compatible:No
Laptop Size:N/A
Organizer Panel:Yes
Pack Fabric (Primary):420D nylon ripstop, 610 Cordura HP polyester
Padded Laptop Compartment:No
Sunglasses Pocket, Lined:Yes
Torso Length:One size
Volume:1800 cu. in. (30 L)
Volume Range:30-45 liters
Waist Belt:Yes
Weight:1 lb. 10 oz.

Eastern Mountain Sports Erratic Daypack Reviews:

Positive Reviews:

Well-made bag, great for bike commuting

I take the yellow Erratic pack with me on my bike commute every day. I only commute a couple miles and this pack is all I need. I had a bigger LL Bean backpack before and it was just too bulky (ie, swinging when pedaling hard, serious wind resistance).

Pro: The Erratic is a nice, smaller, sleeker bag than most standard backpacks.
Con: Sometimes it's a little too small and it's not very wide. Not a huge con--just kinda comes with the territory. I would be hesitant to pack this for any serious camping but a daytrip should be fine.

Pro: It has plenty of straps and places to put things.
Con: Most of the straps are too long and I have to tie them up in the bag so they don't dangle and fly around while I bike. However it looks like you may be able to stick a tent/tight sleeping bag in the straps under the pack, so not a huge negative if you're using it as a light camping bag.

The bag seems to be of good quality and well designed. One slightly annoying thing has been that the overlap that covers the zipper to keep water from getting in is pretty stiff and often prohibits the zippers from closing easily. The compression straps on the side also get in the way sometimes but being able to squish your stuff down balances it out a bit if you ask me.

I got this bag on sale through EMS Clearance and it's definitely worth a reduced price.
Kyle at Eastern Mountain Sports (EMS) on 03/03/2012

Good everyday bag

The Erratic Daypack is a good everyday bag. I use it for school and work primarily, but would travel with it as a carry on, etc. The bag fits items nicely and the zippers and seams seem to be of good quality. I've only owned it for about a month now, but so far so good. The pockets on the sides are a bit tight and can be used for smaller items.
My biggest complaint about the bag is the inability to remove some of the straps. I immediately removed the waist strap, however, there are the straps on the bottom and the sides around the main compartment that serve me absolutely no purpose and I'd like to find a way to remove them without resorting to cutting them.

All in all, a good bag, could use some minor refinements for my purpose, however, many others would probably find those items exceptionally useful.
Dan at Eastern Mountain Sports (EMS) on 10/10/2012

Great backpack

I've had this backpack for over two years now, and it is a great bag. I've mostly used it for travelling for work, and it has held up great to the abuse I gave it. In and out of airplanes, airliners, buses, vans, and every other mode of transportation you can think of. I've also used it for some hiking, and it's been great for that as well. It will hold a 15.4" laptop with no problem, just keep in mind there is very little padding. I put my laptop in a neoprene sleeve, and I have had no issues. The only con I can think of is that there isn't much ventilation on the back of the backpack, so my back gets sweaty very quickly.
Mark the Pilot at Eastern Mountain Sports (EMS) on 06/06/2013

Great Pack

Although not everyone's cup of tea, I recently purchased this pack for a hunting trip. Traveling to and from the location through the airport and several days in the woods I give high marks to this pack. Also, after a successful harvest I needed to pack out over 60 lbs. of gear and meat and this day pack did it well.

I would like to see an included chest strap, but the designers did include nylon webbing for the end user to add on their own.

For over 10 years now EMS products continue to surpass my expectations for quality and value. The Erratic day pack follows the same path and I am looking forward to continued daily use.
P K at Eastern Mountain Sports (EMS) on 03/03/2012

Good everyday bag.

Now that I am in college I decided it was time to get serious about studying. This is why I bought a nice and sturdy back pack. I really like this bag. I've taken it hiking (nothing too extreme, just a small mountain) and it's been great. Mostly I use this bag for school and it's fantastic. I am able to stuff my laptop, notebooks, and 2 textbooks in it (I don't recommend this though because the seams on my backpack are beginning to break and I just got it a 4 months ago). The straps are nice and comfortable as well even if you are carrying a heavy load.
Veronica the Student at Eastern Mountain Sports (EMS) on 10/10/2011

Great daypack.

Great pack for traveling and touring. Holds a ton of stuff without sacrificing comfort on the shoulders and/or back. Two complaints: 1) it needs a mesh pocket for holding a water bottle (which seems standard on most bags), and 2) it has too many straps (the bottom straps seem superfluous).
Other than that, I highly recommend the bag. Best daypack I've ever owned.
Greg at Eastern Mountain Sports (EMS) on 06/06/2013

great pack!!

This is a great pack for a day trip though when I hike I normally go with several other people and carry the gear for several of us and this pack just isn't quite large enought for that. I did use this pack all summer as a counsler and a Boy Scout camp and it held up very nicely.
Sam at Eastern Mountain Sports (EMS) on 01/01/2014

snag it on sale!

Grabbed this on sale. for the price its a great pack. I took it skiing this past weekend and found the pack to be tough and durable. the only downside I found was that there are no external pockets for a water bottle. I personally also found the shoulder straps to be a bit far apart.
Greg at Eastern Mountain Sports (EMS) on 03/03/2012

Great Day Pack

Bought this for my girlfriend, who is rather petite, and it fits her great. Even took it on an overnighter. We stufffed it with almost 20 pounds of stuff and there was no problems. The pack didn't fit me very well, seemed small, but it was great for my girlfriend.
KC at Eastern Mountain Sports (EMS) on 09/09/2013

Lightweight, discreet, functional

i am a pro photographer...i am always looking for a bag that does not scream "steal me" when i am often working in difficult environs...this backpack is extremely functional without being overbuilt and way too heavy empty as are many bags..
davephotog at Eastern Mountain Sports (EMS) on 03/03/2012

Negative Reviews:


When the backpack is full, the back of the pack (the surface closest to your back) takes on a convex bend. Thus it only contacts your back along your spine, instead of spreading the pressure evenly. It is uncomfortable, and is a function of the material the pack is made of, rather than how the pack is loaded.
PAF at Eastern Mountain Sports (EMS) on 03/03/2012

Neutral Reviews:

Great short trip pack

This bag is great for what it is: a day or lightweight 3 day pack. Plenty of room for the essentials but lacking a proper hydration storage pocket and straw port. I tend to use nalgene bottles so not a real problem for me but if you prefer bladders might be a problem.
OutsideRanger at Eastern Mountain Sports (EMS) on 02/02/2014