CORE PRO Backpack Medium 25L
THE NEXT EVOLUTION OF OUR CORE GYM BACKPACK
OUR BEST SELLERS, BUILT TOUGHER
Built for gym, the CORE PRO Medium Backpack is purpose-built for lifters who need a tougher, more organized setup for training.
Designed specifically for carrying your gym essentials, the 25L size gives you room for shoes, belt, wraps, straps, sleeves, towel, bottle and daily gear - without the bulk of an oversized pack. A dedicated lifting belt attachment keeps your Lifting Belt secure on the outside of the bag, so you can carry it without sacrificing space inside.
The CORE PRO Medium Backpack also features an internal shoe compartment that doubles as a wet or sweaty gear zone, dual bottle pockets, a padded airmesh back panel, chest strap, secure quick-access pockets and a large velcro patch panel for personalization.
KEY FEATURES:
- 25L size: 50.8cm H x 30.5cm W x 17cm D / 20" H x 12" W x 6.7" D
- Dedicated lifting belt attachment designed - Carry your lifting belt externally without taking up internal bag space
- Internal dedicated shoe compartment fits up to US size 10 - Shoe compartment doubles as a wet or sweaty gear zone
- Designed to carry shoes, wraps, straps, sleeves, towel, bottles and training essentials
- Laptop sleeve fits up to 16"
- Padded airmesh back panel for comfortable carry
- Dual drink bottle pockets
- Large velcro panel for patch personalization
- Secure quick-access pockets for smaller items
- Chest strap attachment point for extra support
Add optional lifting belt to build your setup your way.*
*Lifting belt sold separately.
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.
THE CORE DIFFERENCE
Your lifting belt has its own place.
The CORE PRO Backpack is built with a dedicated external lifting belt sleeve, so your belt stays secure, accessible and out of the main compartment.
Carry it hands-free
No more carrying your belt separately or forcing it inside your bag.
Save internal space
Keep more room inside for shoes, clothes, towels, bottles and daily gym gear.
Locked in place
Magnetic snaps secure the belt sleeve faster, cleaner and more securely.
CORE PRO — NEXT EVOLUTION
Upgraded where it counts
Same proven CORE function. Now upgraded with smarter belt storage and more ways to make it yours.
Magnetic Belt Sleeve
Upgraded from velcro to magnetic snaps for faster, cleaner and more secure belt storage.
Large Velcro Patch Panel
Built for added customization. Attach your favourite patches and make your CORE PRO setup your own.
Heavy-Duty Shoulder Strap
Our most heavy-duty shoulder strap to date, made with a stronger build, padded support and a more secure carry feel.
Custom Hardware & Reinforced Webbing
Finished with custom hardware and double-reinforced webbing in high-stress areas for a tougher, more dependable build.
SIZE COMPARISON
FAQS
What makes the CORE Medium Backpack different?
The CORE Medium Backpack is purpose-built for lifters, with a dedicated lifting belt sleeve attachment that lets you carry your belt on the outside of the bag instead of sacrificing internal packing space. It keeps your lifting belt secure, easy to access and separate from your clothes, laptop and daily essentials.
What size is the CORE Medium Backpack?
The CORE Medium Backpack has a 25L / 6.6 GAL capacity and measures 50.8cm high x 30.5cm wide x 17cm deep / 20" high x 12" wide x 6.7" deep. It weighs approximately 1kg / 2.2 lbs.
Does the CORE Medium Backpack fit a laptop?
Yes. The CORE Medium Backpack includes a laptop sleeve designed to fit most laptops up to 16", making it a strong option for gym-to-work carry, commuting and everyday use.
Does the CORE Medium Backpack have shoe storage?
Yes. The CORE Medium Backpack includes dedicated internal shoe storage for shoes up to size 10. This compartment can also double as a wet or sweaty gear zone, helping keep used gym gear separate from the rest of your pack.
Is the CORE Medium Backpack good for the gym?
Yes. The CORE Medium Backpack is built specifically for the gym, with space for your lifting belt, shoes, towel, water bottles, accessories and daily essentials. It is ideal for lifters who want a compact backpack that still carries serious training gear.
What should I pack in the CORE Medium Backpack?
The Medium is ideal for your lifting belt, gym shoes, towel, wraps, straps, headphones, water bottles, laptop, chargers and daily essentials. It is designed to carry your core gym setup without the bulk of the Large Backpack.
What is the difference between the Mini, Medium and Large CORE Backpack?
The Mini is the most compact option at 13L and is best for iPad carry, light gym gear and everyday essentials. The Medium is 25L with shoe storage up to size 10 and a laptop sleeve up to 16". The Large is 33L with shoe storage up to size 13 and a laptop sleeve up to 16" for those who need more packing space.
Is the CORE Medium Backpack good for travel and everyday carry?
Yes. The 25L size makes the CORE Medium Backpack a strong all-rounder for gym, work, commuting and travel. It has enough room for training gear and daily essentials while staying more streamlined than the Large Backpack. Always check your airline’s personal item and carry-on size rules before flying.
- IMIsidor M.Verified BuyerReviewingCORE Backpack Mini 13LI recommend this productWhat type of training is your KNKG bag supporting you with? OtherUsing For: Every Day CarryRated 5 out of 5 starsGreat small backpack
Took it on a trip with me and it's the best everyday backpack i could pick: tough, good looking, perfect size.
- RCRobert C.Verified BuyerReviewingCORE Backpack Mini 13LI recommend this productWhat type of training is your KNKG bag supporting you with? Weightlifting, BodybuildingUsing For: Gym Bag, Every Day CarryRated 5 out of 5 starsCore mini
I like the bad but wish I had gotten a larger version or a duffle bag instead. I can barely put my shoes and clothes in there. If I didn't carry shoes with me to change at work it'd be a good size.
- AandrewReviewingCORE Backpack Waxed Canvas Medium 25LI recommend this productRated 5 out of 5 stars5 Stars
Amazing
- LTlouie t.Verified BuyerReviewingCORE Backpack Mini 13LI recommend this productWhat type of training is your KNKG bag supporting you with? Weightlifting, BodybuildingUsing For: Every Day Carry, Gym Bag, WorkRated 5 out of 5 starsPerfect size for the days you don’t need “everything”
Love my Core mini by KNKG, it’s just perfect size when I don’t need to carry all the extra gear on my work/gym days. Where all I need is a bottle and a pair of shorts and tank and my lunch for the work day.
As you can see I also have the plus, but that’s only when I need to carry a lunch, belt, knee sleeves and other stuff.
But the core is perfect for almost a daily every day use type bag.
- DDavidReviewingCORE Backpack Mini 13LI recommend this productRated 5 out of 5 stars5 Stars
It’s great
CORE PRO Backpack — Medium 25L Gym Backpack with External Lifting Belt Storage
The KNKG CORE PRO Medium is a heavy-duty 25L gym backpack with external lifting belt storage, built for weightlifters, powerlifters and serious strength training.
Its compact 25L design carries your daily training essentials while keeping your weightlifting belt secure on the outside, leaving more room inside for shoes, clothes, sleeves, wraps and other gym gear.
A Medium Gym Backpack Designed to Carry a Weightlifting Belt
Most standard backpacks are not designed around the size and shape of a lifting belt. Packing a bulky leather or nylon belt inside can take up valuable space, press against your other equipment and make the main compartment harder to organise.
The CORE PRO Medium solves this problem with dedicated external weightlifting belt storage. Your belt stays secured to the outside of the backpack, where it remains easy to access without taking over the 25L main compartment.
- Save Internal Space: Carry your lifting belt externally and keep the inside available for shoes, clothes and training accessories.
- Secure Belt Storage: The external lifting belt attachment helps hold your belt firmly against the backpack while travelling to and from the gym.
- Fast Access: Remove your weightlifting belt without unpacking the rest of your gym gear.
- Better Organisation: Keep your lifting belt separate from clean clothes, electronics and smaller accessories.
Compact 25L Capacity for Everyday Training
The Medium CORE PRO Backpack provides a more compact alternative for lifters who do not need an oversized gym bag. Its 25L capacity is designed for everyday workouts, giving you enough room for essential training equipment without unnecessary bulk.
It is ideal for gym members who carry a focused training setup and want a comfortable medium-sized gym backpack that is easier to transport, store and carry throughout the day.
Built for Weightlifting, Powerlifting and Strength Training
The CORE PRO Medium is not a generic everyday backpack with gym branding added to it. It is a purpose-built weightlifting backpack designed around the equipment used during strength training, bodybuilding, powerlifting and functional fitness sessions.
Use it for daily gym visits, commercial gyms, powerlifting clubs, bodybuilding workouts, strength and conditioning sessions, weightlifting competitions or training while travelling.
What Fits Inside the Medium 25L CORE PRO Backpack?
The 25L interior is designed for a streamlined gym setup, while the external lifting belt holder keeps one of your bulkiest items outside the main compartment. Depending on the size of your equipment, the Medium CORE PRO can carry:
- One pair of weightlifting shoes, training shoes or sneakers
- A change of gym clothes
- Knee sleeves or elbow sleeves
- Wrist wraps, lifting straps and grips
- Chalk, tape and smaller training accessories
- A compact gym towel
- A shaker bottle or water bottle
- Headphones and training electronics
- Snacks or post-workout supplements
- Phone, wallet, keys and other valuables
Carrying your belt externally means more of the backpack’s compact internal capacity remains available for the equipment you need during your workout.
Upgraded Heavy-Duty Shoulder Straps
Even a medium gym backpack can become heavy once it is packed with shoes, lifting accessories and training gear. The CORE PRO Medium features upgraded heavy-duty shoulder straps designed to provide improved support under load.
Reinforced straps and a padded back panel help make the backpack comfortable to carry between home, work, the gym and training events.
More Ways to Personalise Your Gym Backpack
An expanded hook-and-loop panel gives you more room to personalise the CORE PRO Medium Backpack with patches. Add your name, gym, country flag, training club, competition patches or KNKG accessories to make the bag your own.
The larger patch area also makes it easier to identify your backpack in a busy gym, locker room or competition environment.
Heavy-Duty Materials and Construction
- Durable 500D nylon body material with PVC backing
- Ripstop nylon interior lining
- Heavy-duty YKK zippers
- Reinforced nylon webbing
- Upgraded metal hardware
- Reinforced handles and shoulder straps
- Abrasion-resistant construction for demanding daily use
Smarter Gym Organisation in a Medium Backpack
The CORE PRO Medium combines a compact main compartment with dedicated storage areas for footwear, bottles, valuables and training accessories. Instead of relying on one unstructured compartment, the backpack helps separate your shoes, clothes and smaller items.
This makes it easier to find what you need before, during and after training, without carrying an unnecessarily large gym bag.
Who Is the Medium 25L CORE PRO Backpack For?
The Medium CORE PRO is best suited to lifters who want dedicated lifting belt storage in a more compact backpack. It provides enough capacity for everyday training without the added size of a larger gym or travel backpack.
Choose the Medium 25L size if you usually carry one pair of shoes, a change of clothes and a focused selection of lifting accessories. Lifters who regularly carry multiple outfits, larger equipment or additional travel gear may prefer a larger backpack.
Why Choose the Medium KNKG CORE PRO Backpack?
- External lifting belt holder designed for weightlifters
- Compact 25L capacity for everyday gym sessions
- Medium size without unnecessary bulk
- External belt storage for better security and access
- Upgraded heavy-duty padded shoulder straps
- Expanded hook-and-loop panel for gym patches
- Separate shoe storage and organised accessory compartments
- Premium abrasion-resistant materials
- Heavy-duty zippers, reinforced stitching and metal hardware
- Purpose-built for strength training rather than generic everyday carry
Frequently Asked Questions
What is the best medium gym backpack for carrying a lifting belt?
A medium gym backpack with dedicated external belt storage allows you to carry a bulky weightlifting belt without sacrificing most of the available space inside. The CORE PRO Medium includes an external lifting belt attachment designed to keep your belt secure, accessible and separate from the rest of your equipment.
Does the Medium CORE PRO Backpack have a lifting belt holder?
Yes. The Medium CORE PRO includes dedicated external storage for a weightlifting belt. This allows the belt to sit securely against the outside of the backpack instead of taking up space inside the 25L main compartment.
Is a 25L backpack big enough for the gym?
A 25L gym backpack is suitable for most everyday training sessions when you carry a focused selection of equipment. The CORE PRO Medium can hold shoes, clothes, sleeves, wraps, lifting accessories, a bottle and valuables, while your lifting belt is stored externally.
Is the Medium CORE PRO suitable for powerlifting?
Yes. Its external lifting belt holder, 25L capacity, shoe storage and heavy-duty construction make it suitable for carrying common powerlifting gear such as knee sleeves, wrist wraps, lifting shoes, chalk and training clothes.
What is the difference between the Medium and larger CORE PRO Backpacks?
The Medium CORE PRO has a more compact 25L capacity, making it suitable for everyday training and lighter gym setups. A larger CORE PRO Backpack provides additional internal space for people who carry more clothing, larger training accessories or extra travel gear.
What is the difference between the CORE and CORE PRO Backpack?
The CORE PRO builds on the original CORE Backpack with smarter external belt storage, upgraded heavy-duty shoulder straps, improved metal hardware and a larger hook-and-loop panel for greater patch personalisation.
Can the Medium CORE PRO Backpack be used as an everyday backpack?
Yes. Its compact 25L size makes it practical for everyday transport, but its storage layout and features are designed primarily for gym equipment and strength training.