Sea to Summit Meridian Duffle

The Sea to Summit Meridian Duffle is a convertible travel bag that switches between hand carry and backpack mode with a quick-change harness — no unpacking, no fumbling. Built from 100% recycled polyester with a recycled nylon reinforced base and coated with ReSHIELD, Sea to Summit's waterproof laminate made from reclaimed automotive windscreen film (tested beyond 10,000 mm hydrostatic head), the Meridian is designed to handle airline baggage handling, sustained rain, and the kind of travel that puts gear through its paces. An oversized D-shaped opening with YKK #10 zips, padded grab handles on all sides, all-metal hardware, and an included packing cube round out a bag built for people who move through the world with purpose. Available in 40L, 60L, and 90L. From CA$106.38.

Hand Carry or Backpack — Quick-Change Harness

The Meridian's core feature is its convertible carry system: a quick-change harness that lets you switch between hand carry and full backpack mode in seconds, without opening the bag. In hand-carry mode, the straps tuck cleanly into a dedicated exterior strap garage pocket, keeping them away from airport conveyor belts and baggage handlers. In backpack mode, a strap garage stows the hand-carry strap so it doesn't swing loose. The result is a single bag that works as a checked duffle, an overhead carry-on (40L), and a day-hiking pack — without the compromise of trying to use a backpack as a duffle or vice versa.

Handles Everywhere — Grab It from Any Side

Four-sided padded grab handles — top, both ends, and the base — mean you can pick up and manoeuvre the Meridian however it lands: upright, on its side, coming off a conveyor belt, or being passed through an overhead bin. This isn't a minor detail. Most duffles have one top handle and one end handle; when bags pile up in vans, boats, and cargo holds, you pick up whatever you can reach. The Meridian is ready to be grabbed from any angle.

D-Shaped Opening — YKK #10 Zips

The oversized D-shaped opening gives you full, unobstructed access to the main compartment — not the partial view you get from a centre-zip duffle. The YKK #10 zippers are heavy-duty: the #10 standard is used in luggage, marine bags, and expedition gear where zip failure under load is not acceptable. The interior is clean and unpartitioned except for a zippered lid pocket — by design, so you can pack using a modular system of packing cubes and dry bags rather than fighting fixed dividers.

ReSHIELD — Waterproofing from Reclaimed Windscreens

The Meridian's outer fabric is coated with ReSHIELD, Sea to Summit's next-generation waterproof laminate. ReSHIELD uses PVB (polyvinyl butyral) film recovered from damaged automotive windscreens that would otherwise go to landfill — the same film layer that holds laminated safety glass together. Bonded to the recycled polyester shell, it produces a waterproof membrane tested beyond 10,000 mm hydrostatic head: enough for sustained rain and wet baggage holds. The ReSHIELD coating replaces conventional PU or TPU laminates with a material diverted from the waste stream.

Built for Baggage Handling

The base and corners are reinforced with recycled nylon — the highest-abrasion points on any duffle when it slides across tarmac, cargo floors, and baggage belts. The all-metal hardware (buckles, clips, and zipper pulls) is chosen for durability rather than weight savings: plastic hardware fails under load; metal doesn't. The fully removable backpack straps mean nothing is dangling loose to snag when the bag is checked.

Included Packing Cube — Modular from Day One

The Meridian ships with a compact packing cube included — a useful starting point for anyone building a modular travel packing system. The clean, unpartitioned interior pairs well with Sea to Summit's Hydraulic Packing Cubes and dry bags, which can be combined to create a colour-coded, category-specific organization system inside the main compartment. The zippered lid pocket handles quick-access items — travel documents, a phone charger, snacks — separately from the main pack.

Lower-Impact Materials Throughout

The main body is 100% recycled polyester; the reinforced base and corners are recycled nylon; the ReSHIELD waterproof laminate is made from reclaimed windscreen film. Sea to Summit describes these collectively as "second-life materials" — the design intent is to reduce reliance on virgin inputs across every component of the bag, not just one material choice.

Product Details

The Meridian Duffle is for travellers who want one bag that handles everything — carry-on, checked luggage, and day pack — without switching between separate bags or fighting with a conventional duffle in tight spaces. The 40L is the carry-on choice; the 60L and 90L are built for expedition travel and extended checked-bag trips. Whichever size, the quick-change harness, D-shaped opening, and ReSHIELD waterproofing make it the most versatile duffle Sea to Summit makes. Backed by a lifetime guarantee.