Luggage

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UltraMatrix® is a self-reinforced polypropylene composite developed for the Mous Optimal Carry-On. Polypropylene fibres are drawn for strength, woven into layered sheets and fused under heat and pressure — no glue, no resin, just molecular structure. The result is a shell that's significantly tougher and more resilient than standard polycarbonate, while being lighter. It flexes under impact instead of cracking, and tends to rebound rather than dent. For travellers, that means fewer breakages and more of your weight allowance going on your belongings, not the case.

The Optimal Carry-On targets 2.8kg — lighter than many mainstream polycarbonate cabin cases, which typically weigh 3.5kg or more. On a standard 10kg carry-on allowance, that extra weight saving translates directly into more packing capacity for clothes and gear.

The Optimal Carry-On is engineered to the 55 × 40 × 20cm cabin format, compatible with overhead bins on most major airlines. We recommend checking your specific airline's restrictions before travelling, as requirements can vary.

The Optimal Carry-On was dropped 26 times at 15kg load from multiple heights and angles, dragged 50km on rough surfaces, tumbled 25 full rotations, and subjected to 96 hours of extreme temperatures ranging from -20°C to +65°C, plus 120 hours of UV exposure. The handle was retracted and extended 3,000 times. The Optimal Wheeled Duffel was tested to a similarly rigorous standard — including 100km of loaded wheel rolling, 300 loaded stair ascents and 50 full tumble rotations at 28kg.

Both the Optimal Carry-On and Optimal Wheeled Duffel come with 25-year coverage under the Mous Limited Lifetime Warranty.

The Optimal Wheeled Duffel holds 105 litres. It can be run as a single open compartment or split into two with an included divider. Two zip access options — a full suitcase-style opening and a clamshell top — allow for fast, flexible packing and access.

Yes. Both the Optimal Carry-On and Optimal Wheeled Duffel feature an integrated TSA-approved combination lock. This allows airport security to open and relock the case using a universal key, avoiding forced entry or damaged zips during inspections.

Yes. The Optimal Carry-On includes a hidden AirTag compartment so you can track your bag discreetly throughout your journey without taking up space in the main packing area.

Mous Luggage | Engineered to Go the Distance.


Most hardshell suitcases make you choose: light but fragile, or strong but heavy. Mous luggage is built to change that.

Our Carry-On suitcase is constructed from UltraMatrix® — a self-reinforced polypropylene composite inspired by aerospace engineering. Polypropylene fibres are stretched, woven into layered sheets and fused under heat and pressure to create a single woven structure that flexes under impact instead of cracking, and rebounds instead of denting. At just 2.8kg, it gives back up to a third of your carry-on allowance compared to mainstream cases — more room for what actually matters. Every hardware decision follows the same logic: Hinomoto wheels with Japanese bearings for a smooth, silent glide; a 46-part aluminium telescopic handle engineered for zero wobble; puncture-resistant YKK RCW zips; a TSA-approved combination lock; and a hidden AirTag compartment so you always know where your bag is.

For those who need serious capacity, the Wheeled Duffel delivers 105 litres of flexible, usable space in a soft-shell body built from 1680D ballistic nylon — the same material used across our backpack range. Dual-supported wheels are 75% less likely to fail than typical single-support spinner designs, validated across 100km of loaded rolling tests. A bespoke telescopic handle was pulled 1,000 times at 28kg to confirm it stays solid long after the new-luggage phase has passed. An ABS honeycomb internal frame keeps the bag standing upright and holding its shape at full capacity, without adding unnecessary weight. Both pieces come with a 25-year limited lifetime warranty and have been tested to withstand the harshest real-world travel conditions — from extreme temperature exposure to repeated drop and tumble testing. This is luggage built the same way we build everything else: from first principles, with nothing left to chance.