Stuck between which size to get? We're here to help. WOLFpaks come in three sizes, 25L, 35L and 45L, backpacks see below to discover which bag is perfect for you.


In the figure above, model A is 5'5" is wearing a small 25L bag.  This pack sits snug on her backside. These backpacks run small and are perfect for the day to day grab bag, over one shoulder or grab and go handle. Best fit over both shoulders on a small frame.  While it will fit your gym essentials, a laptop, cell phone, and accessories, others may want to pack that, and more. Fits perfect under seats for air travel too. Currently 65% Females have order this size. 

Model B is 6'1" is wearing the the large 45L bag. This backpack is significantly bigger allowing you to carry all of your essentials and more. Gym belt, laptop, shoes, pre-workout and great fit over both shoulders.  If you're looking for a large backpack this one is for you. Meets carry-on luggage requirements as a perfect fit for the overhead compartment.  Currently 75% Males have ordered this size.

 Both tactical bags are compartment built, so keep in mind its built to keep your gear separated, not having one large opening which makes some backpacks appear bigger. 

Our expert advice; if you don't want to worry about a lack of space, and you're someone who likes a bigger gym bag, the 45L will be great for you. If you're someone who likes to be a bit more nimble, and not pack the entire closet, the 25L will be a great choice!

If you're stuck between the small 25L and the large 45L then our NEW 35L is perfect for you, same style and not too small or not too large. Our Perfect pack!  Currently 50% Males and 50% Females have ordered this size.



  • 10in  x 8.5in  may expand  out to7in 
  • 1.5lbs in empty weight


  • 15in H x 11in W, may expand out to 9.5in
  • 2lbs 6oz in empty weight 
Rear Main Compartment  15.75" x 10.5" x 5.0"
Middle Compartment   14.75" x 9.5" x 2.0"
Bottom Front Compartment  8.5" x 8.5" x 2"
Upper Front Compartment  4.25" x 8.5" x 2"
Exterior Rear Sleeve 11.75" x 10.5"


  • 17in H x 11.5 W, may expand out to 11in
  • 2lbs 10oz in empty weight 
Rear Main Compartment  16.5" x 11.5" x 5.50"
Middle Compartment   14.75" x 9.75" x 2.25"
Bottom Front Compartment  9.0" x 9.0" x 2"
Upper Front Compartment  4.5" x 9.0" x 2"
Exterior Rear Sleeve 12.5" x 11.5"


  • 19in H x 12in W, may expand out to 12in
  • 2lbs 14oz in empty
Rear Main Compartment 18.5" x 12" x 6"
Middle Compartment   17" x 10.25" x 2.5"
Bottom Front Compartment  10.5" x 9.5" x 2"
Upper Front Compartment  4.5" x 9" x 2"
Exterior Rear Sleeve 14.0" x 12.0" 
*Each WOLFpak is hand crafted and may vary 
What's the difference between a Traditional Backpack and a Meal Prep Management Bag?

Your Traditional Backpack is just that, the front pocket is your standard pen, business card pocket.  
Your Meal Management WOLFpak has the same outside design as the Traditional Backpack, however the front lower pocket is built as an internal insulated pocket, which includes 3 large meal containers, ice packet and plastic utensils.   You can also upgrade to our smaller meal containers and fit more meals into one along with our stainless steel utensils. 
Below is our Meal Management WOLFpak, the meal container will go into the middle compartment, and you have the entire rear compartment available to keep all your gear separate. 
Built in Cooler Size 
  • 8.5in x 8.5in x 5in Front Lower Cooler Department (Built In) 
  • 9in x 9in x 5in Front Lower Cooler Department (Built In) 
  • 10.75in x 9.75in x 5in Front Lower Cooler Department (Built In) 
Each one of our WOLFpaks Traditional Backpacks and Meal Management will have the open top protective sleeve in the rear compartment. 

 45L, 35L, 25L Traditional Backpacks Side by Side Difference 

 How much stuff can you stuff our WOLFpaks with, our 35L Rear Compartment 

A Comparison Look of a Male and Female with a 35L Athletic Bag

- Team WOLFpak