Domestic US Orders
Turnaround Time
Every order is built for champions—give us time to prep and ship your gear. Quality takes time. Performance demands precision.
Carriers
We team up with trusted carriers to get your order to you, fast and secure:
- USPS
- UPS
- FedEx
Tracking Info
As soon as your gear hits the road, we’ll send you a tracking number—if the carrier provides one. (Heads up: USPS First Class sometimes ships silent—no tracking on that option.)
Shipping Costs
Shipping rates are based on weight, location, and carrier. location. You’ll see your full shipping cost before you confirm your order—no surprises.
International Orders
Yes, we ship internationally. This is fight-grade equipment for a global standard of athlete*.
We partner with DHL Express Worldwide for all international shipping.
We’ve chosen DHL as our preferred international shipping carrier because it offers superior tracking and reliability—helping to ensure your gear arrives safely and on time.
Duties, Taxes, and Fees
Your ONX gear is crafted to perform at the highest level — wherever you train. Please note that customs duties, taxes, or import fees may be applied by your country’s authorities. These charges are not included in your order total and are the responsibility of the recipient upon delivery.
*Compliance with international shipping laws may apply.
ONX Equipment Duffle Bag & Backpack Black
Built for fighters who don't cut corners. Maximum capacity, full conversion between duffle and backpack, and every pocket engineered for the way you train, travel, and compete
Bigger capacity. Total organization. Zero excuses.
ONX Sports - Equipment and Gear
The Maximum-Capacity MMA Gym Bag. Built for Fighters Who Travel.
The ONX Black Equipment Duffle Bag and Backpack is a 65L maximum-capacity MMA gym bag built for fighters who carry a full training load and need one bag that handles travel, fight camp, competition weekends, and overnight trips without compromise. Large 3/4 zip top opening. Convertible duffle-to-backpack design. Waterproof exterior, custom locking zippers, thermal insulated pockets, ventilated mesh compartments, and external utility straps for drying wet gear. Built for fighters who don't cut corners.
ONX protects the fighter. This bag protects the gear.
Competition Travel
Fight Camp
Overnight Trips
Maximum Equipment Load
MMA and BJJ
Muay Thai and Boxing
Daily Gym Training
Construction Detail
Every Pocket Has a Job. Every Feature Has a Reason.
Most gym bags give you one big compartment and expect you to figure out the rest. The ONX Black Equipment Bag was designed so that every section has a designated function - and so that finding what you need at the gym, at the airport, or at weigh-ins is never the problem.
65L Maximum Capacity with 3/4 Zip Top Opening
The Black bag is the larger of the two ONX Equipment Bags at approximately 65 liters. The large 3/4 zip top opening gives wide access to the main compartment - easy to pack fast, easy to find what you need, and large enough to hold a full load of training gear alongside competition essentials and travel items.
Convertible Duffle-to-Backpack Design
Integrated compartments allow the backpack straps to be fully hidden when converting to duffle mode, creating a clean and streamlined profile. No straps hanging loose, no bulk catching on things in transit. Converts in seconds without clips or tools.
Custom ONX Locking Zipper System
Anti-separation design prevents the bag from being pulled open unless the zipper pull tab is actively used. Not just a zipper - a security system built for gym environments, airports, competition venues, and hotel rooms.
External Utility Straps for Drying Gear
Designed specifically for hanging gloves, shin guards, and wet training equipment on the outside of the bag to assist with drying between sessions. Keeps wet gear off clean clothes and equipment. Doubles as a way to carry additional gear when the main compartment is at capacity.
Thermal Insulated Storage Pockets
Built for pre and post-workout meals, protein shakes, and drinks. Keeps nutrition at the right temperature through training sessions, travel, and competition days - no separate cooler bag needed.
Ventilated Mesh Compartments
Separate shoes and sweaty training gear from clean clothes and equipment. Airflow through the mesh helps reduce odor buildup and keeps the rest of the bag fresher between washes - critical on multi-day fight camp trips.
Fighter-Specific Organization Pockets
Dedicated internal sections for mouthguards, tape, gauze, hand wraps, and training accessories. Everything has a place so nothing gets buried at the bottom of a 65L main compartment when you are trying to find your mouthguard at 6am.
Carabiner Attachment Points
Integrated into the shoulder straps for securing additional items commonly needed for gym and travel use. Hook on a gym lock, key fob, extra gear, or anything else that needs to stay accessible without going inside the bag.
How It Compares
Standard Gym Bag vs. ONX Black Equipment Duffle Backpack
| Standard Gym Bag | ONX Black Equipment Bag |
|---|---|
| Single carry mode only | Converts between duffle and backpack with hidden strap storage - clean profile in either mode |
| Standard zippers that can be pulled open | Custom ONX locking zippers with anti-separation design - bag cannot be pulled open without the pull tab |
| Wet gloves and shin guards go inside with clean gear | External utility straps hang wet gear outside the bag for drying without contaminating the inside |
| No nutrition storage | Thermal insulated pockets for pre and post-workout meals and shakes at the right temperature |
| No shoe or wet gear separation | Ventilated mesh compartments separate shoes and wet gear from clean equipment and clothing |
| Standard construction for casual use | Waterproof exterior, reinforced stitching on all carry handles and stress points, 65L capacity |
ONX Protects the Fighter. This Bag Protects the Gear.
The ONX Black Equipment Duffle Bag and Backpack is the maximum-capacity option in the ONX bag lineup at approximately 65 liters. Built for fighters who travel for competition, run fight camps, and carry a full load of training gear without leaving anything behind. $139.99.
Frequently Asked Questions
Black Equipment Bag - Common Questions
What is the capacity and size of the ONX Black Equipment Bag?
The ONX Black Equipment Bag measures approximately 29 inches x 16 inches with a 9 inch depth, for an estimated capacity of 65 liters. It is the larger of the two ONX Equipment Bags and features a large 3/4 zip top opening for wide main compartment access. This makes it the right choice for fighters carrying a larger load of training gear, traveling for competition, or needing enough space for overnight trips and fight camp packing.
How does the convertible duffle-to-backpack design work?
The backpack straps are fully integrated into the bag with dedicated internal compartments that allow them to be hidden away when using it as a duffle. In backpack mode the straps deploy and lock in place. In duffle mode the straps are concealed inside, creating a clean streamlined profile without loose straps hanging or catching. The conversion requires no tools or external clips and takes seconds.
What are the external utility straps for?
The external utility straps are designed specifically for hanging gloves, shin guards, and wet training equipment on the outside of the bag to assist with drying between sessions. This keeps wet gear separate from clean clothes and equipment inside the bag. The straps also allow fighters to carry additional gear on the outside when the main compartment is at capacity.
What is the difference between the Black bag and the Gray bag?
Both bags share the same core features: convertible duffle-to-backpack design, waterproof construction, locking zippers, thermal pockets, ventilated mesh, and external utility straps. The Black bag has a large 3/4 zip top opening and an estimated 65L capacity, making it better suited for travel, overnight use, fight camp, and fighters carrying a larger load. The Gray bag features a tri-zip opening system that allows it to open fully, with a 55L capacity better suited for everyday gym use and fast daily access.
