• Unisex
• Total capacity: 24 L (in size S4)
• Weight: 394 g in size S4
• Front pocket capacity: 4 L
• Back capacity: 18.5 L
• Holds up to 5 x 500 ml flasks (2 flasks included)
• FlaskLock Pocket™ with bi-stretch fabric and silicone elastic, bounce-free
• Patented LowGravity FlaskPocket™ technology: 17° angled pockets reducing bounce sensation by a factor of 4
• SpineTech™ frame developed with Taiana, vertically rigid and horizontally elastic
• Patented BagFoil™ technology: upper and lower cross fins eliminating bounce even under heavy loads
• TankTech™ compartmented back pocket inspired by tanker truck construction
• SealingPocket™ waterproof pocket in EvenSafe 3L™
• Modular Zipper™ self-locking zip with Breath Clips
• FlowPocket™ front pockets (80% max elongation) and zippered SecurityPocket™
• CrossLock Pocket™ (50 ml) for keys or earphones
• Integrated safety whistle compliant with ultra-trail requirements
• WingsPocket™ side wings in bi-stretch Cordura fabric (up to 79% stretch)
• Patented SideDraw™ instant side flask access
• Estimated lifespan: over 10,000 km
• Durability: over 100 wash cycles

The Running Bag 555 redefines trail autonomy with its record 24-litre capacity and stability maintained even under maximum load. Its construction draws from tanker truck engineering: the patented TankTech™ technology compartmentalises the back volume to distribute weight evenly and limit inertial movement of contents. BagFoil™ fins keep the load close to the runner's centre of gravity, eliminating any asynchronous motion between pack and body. The 17°-angled flask pockets via LowGravity technology reduce bounce sensation by a factor of four, validated through finite element modelling. The SpineTech™ frame, co-developed with textile partner Taiana, provides an anatomical fit through total vertical rigidity combined with horizontal elasticity allowing unrestricted chest expansion.

Made in Portugal.