Walmart has
10L Ozark Trail Polyester Backpack (Navy or Rose) for
$4.97. Select free store pick up where stock permits otherwise
shipping is free with Walmart+ (
free 30-day trial) or on orders of $35+.
- Note: Store pick up will vary by location and may not be available in all areas.
Thanks to Community Member
tunabreath for finding this deal.
Available colors:
Features:- Compact 10-liter capacity is perfect for day trips or daily use
- Features a large main compartment for essential items
- Front zippered accessory pocket for storing small valuables
- Padded back panel and adjustable shoulder straps for a comfortable carry
- Top carry handle for easy lifting and storage
- Made from stylish and durable embossed polyester fabric
- Dimensions: 8.47" x 4.93" x 16.15"
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The most common measurement I find on Walmart, where this deal is, is inches in one dimension, and inches in all dimensions. 60% or more. And that might be expected, because America is still not a metric country.
As predicted - in my first post, this has become an argument in metric is right! as opposed to my observation that this is a very small backpack, and the seller is disguising that fact by giving the volume in metric instead of the actual spatial dimensions in inches.
It's 7-8 inches big! More like 16.15 in × 5.33 in × 7.02 in.
If a backpack lists inches in its name/title, it almost certainly is referring to the size of a laptop that fits. In the US, laptops are most commonly referenced by the diagonal length of the screen in inches. And this is referring to a laptop with a typical 16:9 screen ratio. You should also note that this one measurement in inches, like volume, does NOT indicate any of the dimensions of the backpack.
The remaining backpacks with a measurement in the name are almost always a measurement in liters.
Go to REI.com and search for backpacks. That site does commonly list the full LxWxD dimensions, along side the capacity in liters and weight in pounds. But you'll notice once again that product names themselves, if they have a measurement, reference the capacity in liters. 2 examples are "Patagonia: Atom 24 L Pack" and "Cotopaxi: Allpa 26 L Pack". In addition, many of their backpacks have just a number listed in the product name. And in these cases, the number normally refers to the capacity in liters. "REI Co-op: Ruckpack 30" and Osprey: Nebula 32 Pack" have 30 and 32 L capacities respectively.
This is not an argument about whether or not metric is right. But it is an argument for standardization. It is a standard convention for backpacks, even in the US, to be referenced by their capacity in liters. This does have the benefit of providing one number that works worldwide.
I also think that this value also works well even in the Imperial countries since volume/capacity is more abstract than simple 2 dimensional measurements. As an American, I do have a much better concept of how long 7 inches is than 7 centimeters. I would be confused by a "38 cm" laptop, but I'm right at home with one that is "15 in". But in all honestly, I have no idea how many pairs of pants I can fit in a liter or gallon of space. Instead, I rely on referencing other bags I already have. If I know how much I can fit in a 20 L bag, I have a good idea of how much clothes I can pack in a 32 L bag.
FYI, you might have not had any idea this bag was small until you got the measurements. But those who have spent time researching backpacks likely knew right away that 10 L is small. I know that most slings I'd want for travel would probably be in the 2 - 3 L range. My kids' Under Armour backpacks have a capacity of around 30 L. My new Osprey Nebula 32 bag has a 32 L capacity. And my lighweight Cotopaxi bag with "16" printed on the bag has a capacity of about 16 L. And since all of these use this one basic measurement, I can estimate pretty well how much each one can hold.
I'm more than happy to call out large companies like Walmart for being misleading. But referencing the capacity of this pack in liters falls right in line with the broader standard.
If you'd like to argue your point more, please provide a sample of backpacks with names that primarily reference just one or more of it's dimensions in inches. And don't cherry pick one specific brand or obscure search string. As mentioned in my posts, my suggest was searching Amazon, REI, and Walmart for simply "backpack". From the search results on those sites, I don't normally see any of the basic dimensions, height, width, or depth, listed in the product name.
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