CORE Backpack XPAC Medium 25L
LIMITED EDITION X-PAC CORE BACKPACK
Technical. Durable. Weather resistant.
Same CORE Backpack functionality. A completely different material.
Built with X-PAC® X42 — a high-performance laminate developed from advanced sailcloth technology. Born from materials engineered to perform in demanding marine environments, X-PAC applies the same principles of strength, low weight, stability and protection from the elements to everyday carry.
X42 is built around a tough 420-denier nylon face, reinforced with X-PAC’s distinctive X-PLY® fibre grid and bonded to a waterproof film backing. The result is a material that is highly durable, abrasion resistant, lightweight for its strength and built to handle wet conditions.
That visible X-pattern isn’t just for looks. The X-PLY® reinforcement helps add structure, control stretch and reinforce the fabric under load.
FEATURING:
- 420D nylon face fabric
- Reinforced X-PLY® construction
- Waterproof film backing
- High abrasion and tear resistance
- Excellent strength-to-weight ratio
- Distinctive technical X-PAC finish
- Dual bottle pockets
- 16” Internal laptop sleeve
- Sealed shoe compartment
- External lifting belt attachment
Covered by our guarantee to be free of defects in material or workmanship. If there is a defect in materials or workmanship KNKG will repair or replace your bag.
BORN FROM SAILCLOTH. BUILT FOR MORE.
X-PAC® has its roots in high-performance sailcloth, engineered to withstand demanding conditions where strength, weight and weather resistance matter. Using X-PAC® X42, this limited edition CORE Backpack brings that same performance-driven construction to your everyday carry. Tough, lightweight and highly water-resistant, it’s built to take on hard training, daily use and whatever comes next.
SIZE COMPARISON
X-PAC CORE BACKPACK FAQ
What is X-PAC?
How big is the X-PAC CORE Backpack?
Is the X-PAC CORE Backpack waterproof?
Does the X-PAC CORE Backpack have shoe storage?
What can I fit inside the 25L CORE Backpack?
Why choose X-PAC over traditional nylon?
Is X-PAC durable?
Can I use the X-PAC CORE Backpack for travel?
- JJonathanReviewingCORE Backpack Waxed Canvas Medium 25LI recommend this productRated 5 out of 5 stars5 Stars
This thing is perfect. Wish you made this in large with waxed canvas. I bought the waxed mini duffel as well and love them both.
- JGJustice G.Verified BuyerReviewingCORE PRO Backpack Large 33LI recommend this productRated 5 out of 5 starsDurable, spacious, well designed
As always, KNKG has knocked it out of the park. The redesign keeps all of the best aspects of the CORE bag, while streamlining small but meaningful features such as the top pocket, and the side waterbottle pockets. Also, the expanded velcro patch area is fun.
- JAJohn A.Verified BuyerReviewingCORE Backpack Waxed Canvas Medium 25LI recommend this productWhat type of training is your KNKG bag supporting you with? Bodybuilding, WeightliftingUsing For: Gym Bag, Sport / Fitness, Every Day CarryRated 5 out of 5 starsBuilt for the Journey 💪🎒
⭐⭐⭐⭐⭐ Built for the Journey
I absolutely love my KNKG CORE Waxed Canvas 25L. I brought it with me to Lake Tahoe, and it quickly became a favorite with my whole family.
My younger son loved it so much he had to model it himself—and as you can see from the photo, the 25L is almost as big as he is! 😂
Beyond the laughs, this bag is seriously well built. The waxed canvas looks even better in person, the construction feels tough, and there’s plenty of room without it feeling oversized when I wear it. It has that rugged look I wanted while still being practical for the gym, travel, and everyday use.
Seeing my son having so much fun with something I already loved made the bag even more memorable for me.
Five stars from this dad. 💪🎒
- PDPamela D.Verified BuyerReviewingCORE Backpack Waxed Canvas Medium 25LI recommend this productWhat type of training is your KNKG bag supporting you with? Functional Circuit TrainingUsing For: Every Day Carry, Work, Gym BagRated 5 out of 5 starsA Work of Art
From the over the top unboxing experience to the insane quality of this bag, I've never felt so much joy receiving and using a backpack. It is completely fit for purpose and surprisingly comfortable. I can't describe how beautiful it is. Woodland camo, beautiful? Damn straight. This from someone who owns no other camo items at all. And probably never will. Nothing else would ever measure up. Thank you for making such an amazing product.
- CPCorey P.Verified BuyerReviewingCORE Backpack Medium 25LI recommend this productWhat type of training is your KNKG bag supporting you with? CrossFitUsing For: Gym BagRated 5 out of 5 starsCore backpack medium 25L
Been a great bag so far. Fits everything that I need in it. I like the extra shoe compartment. Really love the durability of it.
Limited Edition X-PAC Backpack Built for Training and Everyday Carry
The KNKG X-PAC CORE Backpack is a 25L gym and everyday carry backpack built to move between training, work, commuting and travel. Made with X-PAC X42, a technical performance material with roots in high-performance sailcloth, it combines dedicated gym functionality with the streamlined organization needed for daily carry.
Read more Read less
Built with X-PAC X42
X-PAC is a technical laminated material with roots in high-performance sailcloth. Its multi-layer construction is designed to combine durability, structure and water resistance in a material well suited to demanding everyday use.
X42 gives the CORE Backpack its distinctive technical appearance, including the visible reinforcement grid associated with X-PAC fabrics. The structured construction helps the backpack maintain its shape while moving between the gym, office, commute and weekends away.
A 25L Gym Backpack Designed for Daily Training
The CORE Backpack is built around the gear athletes carry every day. Its 25L capacity provides room for training clothes, lifting accessories, toiletries, a towel, tech and other gym essentials, while a dedicated internal shoe compartment helps separate footwear from the rest of your gear.
The 25L size gives you enough space for a complete everyday training setup without the bulk of an oversized gym backpack. It is designed for athletes who want their training gear organized, accessible and ready to move.
Built for EDC, Work and Commuting
The X-PAC CORE Backpack is equally at home outside the gym. Its streamlined backpack format and organized storage make it a practical option for EDC, commuting and work, allowing you to carry tech, everyday essentials and training gear in one backpack.
For athletes who train before or after work, the 25L capacity helps bridge the gap between a traditional gym backpack and an everyday carry backpack. Pack what you need for the day, move through your commute, then head straight into training without changing bags.
One Backpack for Gym, EDC and Travel
The CORE Backpack is designed to transition easily between different parts of your day. Use it as a gym backpack during the week, an EDC backpack for everyday essentials, or a compact travel backpack for short trips and weekends away.
X-PAC's water-resistant outer construction adds useful protection when you're moving through changing conditions, helping shield your gear from light rain, splashes and everyday moisture.
A Technical Everyday Backpack with Gym Functionality
Most everyday backpacks are not designed around training gear, while many traditional gym bags are not built for daily commuting. The X-PAC CORE Backpack brings both uses together in one 25L format.
Dedicated shoe storage, practical internal organization and a technical X-PAC exterior make it a versatile choice for athletes who want one backpack to handle training, work, everyday carry and travel.
X-PAC CORE Backpack Details
- Capacity: 25L / 6.6 gal
- Bag weight: 1.1 kg / 2.4 lb
- Dimensions: 50.8 × 30.5 × 17 cm
- Shoe storage: Dedicated internal shoe compartment
- Primary use: Gym, training, EDC, work, commuting and travel
- Outer material: X-PAC X42 technical laminate
- Weather protection: Water-resistant outer material
Frequently Asked Questions
Is the X-PAC CORE Backpack good for both the gym and everyday carry?
Yes. The 25L CORE Backpack is designed to work across both training and everyday carry. It provides dedicated storage for gym gear and shoes while maintaining a streamlined backpack format suited to commuting, work, daily essentials and travel.
What is X-PAC?
X-PAC is a technical laminated performance material with roots in high-performance sailcloth. Its layered construction is designed to provide durability, structure and water resistance while maintaining a distinctive technical appearance.
Does the 25L X-PAC CORE Backpack have shoe storage?
Yes. The 25L CORE Backpack includes a dedicated internal shoe compartment, helping keep training footwear separated from clothing, tech and other everyday essentials.
Is 25L a good size for an EDC backpack?
A 25L backpack offers enough room for everyday essentials, tech, clothing and training gear while remaining practical for daily commuting. It is particularly useful for people who need one backpack to cover both work and gym use.
What can the 25L CORE Backpack hold?
The 25L capacity can accommodate a typical daily setup including training shoes, gym clothes, lifting accessories, toiletries, a towel, tech and other everyday items. How much you can carry will depend on the size and volume of your individual gear.
Is the X-PAC CORE Backpack waterproof?
X-PAC X42 is highly water-resistant rather than completely waterproof. The outer material helps protect your gear from light rain, splashes and everyday moisture, but the complete backpack should not be considered submersible or fully waterproof because water may still enter through seams and zippers.
Can I use the X-PAC CORE Backpack for work or commuting?
Yes. Its 25L capacity and backpack format make it well suited to commuting and everyday use, particularly for athletes who want to carry work essentials and gym gear together rather than switching between separate bags.
Can the X-PAC CORE Backpack be used for travel?
Yes. The 25L size makes it a practical option for day trips, short travel and weekends away. Airline baggage requirements vary, so always check the current carry-on or personal-item dimensions for your airline before flying.