I love it.
"It's very well designed and is made very well. I'm excited about future trips. I improved my travel tools."
Trilogy Modular System
-20%
$319.20
$399.00
Rating: 4.9 out of 5
Select Color
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World's most advanced modular 4-wheel spinner!
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Zip apart to fit in tight airplane spaces - never check a bag!
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Patented 3-bags-in-1 design:
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Expandable Spinner - With 360° wheels and side pockets.
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Weekender Daypack - Ideal for quick trips or as your personal item.
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Expandable Tote Pack - Multiple modes of carry; everyday or for travel.
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Converts to a rolling bag or travel backpack.
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All Three Bags are Expandable!
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All 3 bags can be used separately, or together - mix and match!
The Trilogy Modular System - The Only Bag You’ll Ever Need!
Travel smarter, lighter, more flexibly, and more easily organized. The Trilogy Modular System combines innovative design with premium flexibility. Whether it’s a quick business trip or a multi-destination journey, this 3-bags-in-1 system adapts to your travel and everyday needs—anticipating them with style and ease.
What’s Included
- ✅ Trilogy Expandable Spinner
- ✅ Trilogy Weekender Daypack
- ✅ Trilogy Expandable Tote Pack
Trilogy Expandable Spinner
Sleek. Structured. Effortless.
- Expandable design for flexible packing
- Rigid solid base and internal reinforcements - maintains shape, even fully loaded
- Smooth-glide 360° spinner wheels
- Slim enough to fit under most airline seats
- Quick-access side pockets for essentials
Trilogy Weekender Daypack
From daily carry to weekend-getaway ready.
- Opens flat like a suitcase for easy packing; expands for longer trips
- Fits up to a 17" laptop and a tablet
- Large quick-access front panel for tech organization
- Hidden under-pack sling doubles as a strap cover if you check the bag
- Combine with the Expandable Tote Pack to create the Double Pack
- Works as an everyday backpack or a weekender
Trilogy Expandable Tote Pack
Versatile, convertible, and workstation-ready.
- Three modes of carry: use it as a briefcase, shoulder tote, or backpack
- Easy top-loading main compartment
- Fits 17" laptop and a tablet
- Attaches to airplane/train tray tables to create an in-transit workstation
- Expandable, with adjustable straps and side pockets
- Flawlessly organized front pockets with RFID protection
Why Choose the Trilogy Modular System?
✔️ Modular, three-bags-in-one design - more value, more flexibility
✔️ Premium ballistic nylon materials built to last
✔️ Seamless, thoughtful organization - security and quick access
✔️ Traveler-focused built-in features - there when you need them!
✔️ Stylish enough for business, durable enough for adventure
✔️ The most advanced modular spinner there is!
Ready to Join the Modular Travel Revolution?
Experience more freedom and more functionality with the Trilogy Modular System - the world’s most advanced modular spinner.
Continental USA
Free standard shipping currently available.
Onli Travel Continental USA Standard Shipping rates (“standard shipping”) for all products shipped to addresses in the continental United States (lower 48 states and District of Columbia) are as follows: If a customer’s purchase is less than $100, then a flat $9.99 will be charged for shipping, and Onli Travel will select the carrier. If a customer’s purchase is over $100, then a flat $19.99 will be charged for shipping, and Onli Travel will select the carrier. If free shipping is enabled, it refers to standard shipping unless otherwise specified. Our standard rates usually ship UPS Ground (typically about 1 to 6 days for delivery). If using our standard rate or UPS, please do not use a PO Box because it will be returned to Onli Travel. Customers may also choose a faster shipping option when checking out, but will then be responsible for bearing 100% of the shipping cost as shown at checkout. Onli Travel may combine multiple products into one shipment in order to minimize cost and efficiency if going to the same shipping address.
Non-Continental USA
Onli Travel will allow purchaser to choose their desired shipping method to destinations outside the continental United States, but will be responsible for 100% of the shipping cost as shown at checkout. This policy applies to customers shipping to US addresses outside of the mainland United States (Alaska, Hawaii, Guam, Northern Mariana Islands, American Samoa, Puerto Rico and US Virgin Islands, Armed Forces Americas, Armed Forces Europe, Armed Forces Pacific, Palau, Micronesia and Marshall Islands). Onli Travel may combine multiple products into one shipment in order to minimize cost and efficiency if shipping to the same address.
Canada
Onli Travel LLC will offer Canada Standard Shipping to all Canadian provinces and territories via Onli Travel’s carrier choice and method on purchases over $100 for $49.00 (USD) and $19.99 (USD) for items under $100. Customers may choose an alternative method from the list of carriers and methods, but will pay the full cost of shipping with no discount. All purchases shipped to Canadian addresses will incur a $1 (USD) surcharge for filling out customs information and declaration forms. Customers are responsible for paying any duties, taxes or tariffs that may occur when shipping across international borders. Onli Travel may combine multiple products into one shipment in order to minimize cost and efficiency if shipping to the same address. Customers may also choose a faster shipping option when checking out, but will then be responsible for bearing 100% of the shipping cost as shown at checkout.
Rest of the World
Onli Travel shipments outside of the United States and Canada, will incur the shipping costs incurred at checkout. All international orders will incur a $1 (USD) surcharge for filling out customs declarations and forms. Customers are responsible for paying any duties, taxes or tariffs that may occur when shipping across international borders. At checkout, customers will be given a choice from a selection of carriers and methods for shipment of their order, and will bear the cost of shipping as shown at checkout. Onli Travel may combine multiple products into one shipment in order to minimize cost and efficiency if going to the same address.
Important Note for Customers Shipping Products Outside of the United States: Carriers or governments may impose tariffs, taxes, duties or other fees on international shipments. The customer is responsible for paying these costs, and Onli Travel cannot accept returns due to these fees.
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Expandable Tote Pack
- Carry as tote or backpack
- Quick access pockets
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Weekender Daypack
- Holds a tablet and up to a 17” laptop
- Secure side pocket
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Expandable Spinner
- 360° glide wheels
- Handles on 3 sides
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Trilogy Modular System
- 3-bags-in-1
- Zip on / zip off
Overall rating: 4.9375 / 5 from 16 reviews.
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Review highlights
Reviews
Well made!
"Gift for husband who requested it. Engineering genius!"
Great Bag
"So far, I have only used the bag twice and only used the main roller bag. I have not used the attachment bags but look forward to doing so. The bag is compact but expandable and seems rugged and well made. It rolls very nicely and holds everything securely. I hope to put the bag to its full potential and use the various attachment bags and expandability features."
Just as promised
"This is such a versatile bag, or should I say three bags. I love the thoughtful design and multiple functions of this system. Can't wait to take it on my next trip!"
Recent trip
"I used the bag on a short work trip. The main suitcase worked well for my clothes. The detachable backpack worked well for my computer and papers during meetings. I like having a hand free when maneuvering through doors and elevators."
Onli has the best products.
"Excellent Experience. Products are great."
Really neat system with tons of flexibility
"The use of space with this modular system is very impressive. There is also a great deal of flexibility if you only need a day's worth of items for an overnight trip, or a week's worth or more. The system is also very balanced and does not tip over. The wheels move freely and it is quite easy to roll the entire system in the airport or over sidewalks. Really impressed wtth the design and packing cube system. The hardest part is remembering which compartment I put things, but this will come with experience."
This Luggage System Changed Everything!
"I’m not a casual traveler—I’m on planes almost every month, hopping between Asia, Europe, and the U. S. , with over 30 flights a year (and more than 10 of those are long-haul). After 20+ years of traveling like this, I’ve tried a lot of luggage brands, but nothing has made life on the road easier than Onli Travel. I started with the Revolution 3-piece modular system back in May 2023, and I loved it so much that I backed the Trilogy system during the Kickstarter in 2024. The reinforced Trilogy spinner is fantastic—smooth, sturdy, and reliable. What really impressed me, though, is that both systems are compatible, so I can mix and match pieces depending on the trip. That flexibility has been a game changer. One of my favorite parts is the Revolution Expandable Day Pack, which I use every single day as my laptop bag. It’s not just for travel—it’s become my everyday carry. When I’m on the move, I can easily shrink or expand the whole luggage setup based on what I need, which has made check-ins, security, and boarding so much less stressful. Onli’s modular design has completely streamlined my travel. Instead of juggling multiple bags for different situations, I have one system that adapts with me. I can honestly say this is the best luggage I’ve ever owned, and I highly recommend it to anyone who travels often—or even just wants smarter, more flexible luggage."
Pockets galore!
"I got this with the duffel as a whole set and I’m still discovering what to do with the many pockets… but I absolutely love the feature of being able to remove smaller sections or parts to leave bigger ones at the hotel/house for more portable use when exploring. Awesome!"
Great all around bag
"Great to have a bag that gives all these options. Please note that with some of the international flights that I've looked at, the backpack or totepack by themselves don't meet the measurement standards. Yes, some may let you get by but in case they have you measure, you may need to check it in. The suitcase however is within those dimensions unexpanded (with the airlines that I've looked at). But I have not looked at all of them."