POLYFIT RUCKING BACKPACK 2.0 - BUILT TO MOVE
The Polyfit Rucking Backpack 2.0 is a performance-built rucksack designed for walking, running, rucking, and strength training. With a patent-pending side-loading system for standard weight plates (sold separately), this durable pack offers stability, comfort, and functionality for serious endurance workouts and everyday fitness. Whether you’re training for a ruck march or leveling up your cardio, it’s built to move with you.
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Size: One Size Fits Most (XS - L)
Weight Plates Sold Separately
Compatible with Polyfit Weight Plates and standard-sized 10" x 12" rucking plates
Compatible with Polyfit Weight Plates and standard-sized 10x12 cast iron rucking weight plates. Maximum load capacity up to 40 lbs.
【HIGH PERFORMANCE RUCKING BACKPACK】Specifically designed for rucking weight plates, this backpack keeps the weight close to your upper back for better posture, less forward lean, and maximum training efficiency. The secure plate placement improves comfort and range of motion—so you can ruck harder and longer. Just load your weight and go.
【RUCK-OPTIMIZED LOAD SYSTEM】Our patent-pending side-loading design makes it easy to insert or remove weight plates while keeping them locked in place with an internal buckle system—no shifting, even during intense movement. Holds up to 40 lbs and fits Polyfit Weight Plates, cast iron plates, and similar styles up to 10 x 12 inches (plates sold separately).
【ONE SIZE FITS MOST】Fits body types from Extra Small to Large (XS–LG). Note: On XL+ or tall frames (6’0”+ with broad shoulders/chest), the fit may feel snug—see sizing photos for reference. Suitable for men and women.
【COMFORTABLE & BREATHABLE FIT】Engineered for all-day comfort, this rucking backpack features padded straps and a breathable back panel to reduce strain and keep you cool during long rucks or challenging hikes. Its compact design minimizes bulk for a snug fit, while providing the durability and weight capacity needed to tackle your toughest challenges.
【MAX RANGE OF MOTION】Lightweight and mobile design enhances flexibility and freedom of movement, making it ideal for training, bodyweight workouts, and rucking challenges.
【MOLLE SYSTEM & PATCHES】Customize your backpack with the MOLLE system to attach extra gear and patches for personalization. We have included four complimentary patches to get you started on your fitness journey.
- Primary Material: 600D Polyester Oxford
- Fits Polyfit Weight Plates
- Fits (2) 10"x12" Cast Iron Ruck Plates (MAX 40 LBS)
- Adjustable Weight (with Weight Plates)
- Padded Shoulder Straps
- Breathable Back Panel
- Plate Pocket with Velcro Closure
- Laser-cut MOLLE Webbing
- Four Velcro Patches Included
***Weight Plates Sold Separately
Patent Pending in USA
Application No. 30/004,431
All of our products come with the Polyfit Guarantee. We stand behind our products 100% so you can feel confident that we will have your back if there is an issue.
We have a 30-Day Return Policy (for any reason), plus an extended warranty to the original user as described below.
Polyfit warrants to the original user that the Polyfit product will be free in material workmanship or defects for a period as specified below from the date of purchase.
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Product |
Warranty |
|
Weight Plates |
1 Year Warranty |
|
Weight Vests |
180 Day Warranty |
|
Sandbags |
180 Day Warranty |
|
All Other Products |
90 Day Warranty |
If there is a defect in workmanship or if you actually wear our stuff out, Polyfit will fix or replace (at our discretion) your item. For instructions on the return process, see our Refund Policy.
- $10.00 Standard Shipping for all USA orders.
- Most US-based orders are shipped within 24-48 hours for maximum efficiency.
- Our product will arrive within 4 to 7 Business Days.
- We offer Expedited Shipping starting at $12.00, which will arrive within 4 Business Days.
- Currently, we do not ship to Alaska, Hawaii, or outside the United States.
For eligible products on Polyfit, Amazon Prime members can now enjoy free shipping and free returns on eligible items. Simply click "Buy with Prime" on the product page. Learn more about Buy with Prime.
⚠️ WARNING: This product can expose you to chemicals including dimethylformamide, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Overall rating: 4.75 / 5 from 16 reviews.
Review topics: [].
"Pretty good little ruck trainer pack. Well constructed and slim enough to keep the added weight close to your center of balance. The straps have enough padding to not be terribly uncomfortable on a hike. Will hold weights/plates of generic size no problem. Zippers work smoothly, and don’t bind up. I would say this pack does great for the price considering I have seen some that aren’t any better for way more money."
"I ordered this for my husband to use during workouts as an alternative to carrying around a bulky backpack. Unfortunately, I didn’t measure the weights we already have, and they turned out to be too big for the bag. Luckily, his vest plates fit perfectly, so he’s still able to use it. Overall, the bag feels very sturdy. The clips and buckles are made from heavy-duty plastic, and the padding is thick and comfortable. He likes that it sits high on his back, which makes it great for running or rucking. There’s also a small opening at the top, which looks like it could work for a hydration hose (maybe that’s the intended purpose). The bag itself is compact and minimalist—perfect for working out without the bulk of a regular backpack. So far, he’s used it on a few walks and says it’s comfortable,"
"Seems like a quality product. Comfortable and cushioned. Make sure your ruck weight is 10x12 or smaller. Several brands sell different sized weights and this vest only fits the more compact style. You can use traditional Olympic round weights (CAP brand) but only fit about two 10lbs weights. They seem to fit pretty well honestly. I’ll update if anything breaks on some walks this week. Otherwise it looks good, minimalist and good quality fabric and zippers."
"This vest is so comfortable. It is adjustable to fit many body shapes and is padded so the straps do not cut into your shoulders and arms. The plates secure nicely, so there is no sliding. This is important the faster your are moving. A sliding plate will slam against your back (don't ask how I know). This backpack is meant for your weight plates and a small pocket for valuables. You can squeeze other items in the main compartment, but that is not the purpose. If you are looking for a small rucking backpack this one is great. It is a great exercise/ trainer for hikers and everyone."
"Use Case – 9/10 Built for rucking and endurance training, this pack has solid construction and feels durable enough for heavy use. Perfect for weight plates and training gear. Performance – 8/10 Carries weight well and feels stable during movement. However, the opening is narrow — I’d recommend making it wide enough to fit a short, wide CamelBak Antidote bladder for more hydration flexibility. Price – 9/10 Good price for the build quality and features. My Two Cents: Widen the main opening to better fit hydration bladders and bulkier gear. This would make the bag more versatile without sacrificing durability. Recommend: Yes"
"This is an extremely durable pack that will hold weighted plates up to 40 pounds. It stays in place well with the chest straps and the weights stay out even strapped properly in the pack. The straps are well seamed and should withstand a lot of use and abuse. The patches on the front make this fun and give you the grit and determination to carry out your task."
"This is a quality ruck sack for the price point. I read some reviews of the first version, and it seems some of those issues have been addressed in version 2.0. A lot of the sticking on the new version has been re-enforced. The padding is sufficient both on the back and the straps. I've been using it on the treadmill and haven't had any issues. The one thing I don't like is that I had to buy new weights because this pack only fits 12x10-inch plates. I have 2 ten-pound plates in it right now, and I'm worried about if I'll be able to fit a 3rd or 4th. Overall, a very solid pack for the price."
"Review: Overall, this pack has been a great addition to my rucking routine. I am 5'6 and it fits me nicely. The design sits high and snug against my back, which makes it comfortable for both short walks and longer rucks. The weight distributes evenly once loaded, and I never felt it shifting around, even with turns or a steady pace. The padding on the straps is firm but comfortable, and it does a good job reducing pressure without overheating. I like how easy it is to slide a plate in and secure it, once it’s in place, it stays put without bouncing around. I also appreciate the overall simplicity of the pack. It is easy to adjust, easy to load, and doesn’t overcomplicate things with extra bulk. All in all, this ruck is exactly what I was hoping for. It’s sturdy, well-designed, and reliable for regular use. If you’re looking for a straightforward, quality pack that performs as expected on rucks, this is a solid choice."
"This is super comfortable, and using a 10lbs plate, I can walk all day. The padding on the straps is enough to keep it comforting, but plenty of support. The sternum strap is easily adjustable, as well as the should straps themselves, so if you share this, you can easily adjust. The color is true OD; not that it matters. Inserting the plate is great. It's not a traditional plate carrier in that you just slide it in. There is a Velcro strap inside keeping the plate from sliding around the pouch, which I think is the best part. Added Bonus: Patches."
"This review is for Polyfit Rucking Backpack 2.0 - Weighted Ruck Pack for Weight Plates - Patent Pending Side-Loading Rucksack for Walking, Running, Rucking, Strength and Endurance Training - Black Camo On the one hand, it works well. If you keep it below forty pounds, use the recommended size of weight plates, and tighten the straps to your frame, it is pretty comfortable to ruck with and can add challenge to any workout. The straps and back padding are comfortable, it looks cool, and is quite compact. However, the fabric used, while sturdy, is not enough to stand up to jumping, heavy running, and other more intense motions when approaching the maximum weight. The side loading feature is not terribly impressive, it is difficult to fasten the retaining buckle on the inserted weight plates too.I have the first version of this ruck pack, and it not only fits more plates in it, but is easier to do so as a top loader. Overall, this is a decent weight plate carrier, but I feel it is overpriced and needs higher quality, more durable construction, 3.6 out of five stars."
