Simond MT900 Symbium 90+10L Men’s Trekking Backpack

A premium trekking backpack designed to provide exceptional carrying comfort and durability for the most demanding treks. Thanks to innovative Symbium technology, the structure of the waist belt and shoulder straps is optimised so that the backpack adapts perfectly to all your movements. This reduces the pendulum effect of the rucksack and saves the trekker’s energy, reducing fatigue on long journeys.

Carrying comfort and adjustability

• SYMBIUM technology: Structure that adapts to movements and provides stability.
• Perfect fit: Adjustable straps and multi-density foam padded back.
• Ventilation: Ventilation channel between the supports improves breathability and reduces sweating.
• Back length adjustment range: 35–54 cm (14–21 in)
• Belt circumference adjustment range: 72.9–136 cm (29–54 in). Tip for measuring back length: Measure the distance between your 7th cervical vertebra (located at the base of your neck, arches when you tilt your head down) and your iliac crest (top of your hip).

Capacity and packing

• Volume: 90 litres, adjustable with an additional +10 litres thanks to the height-adjustable cover.
• Organisation: A total of 10 storage areas keep your trekking equipment organised.
• Easy access: Large main compartment with a convenient front access for easy packing and unpacking.

Versatile features

• External fasteners: Dedicated attachment points for poles and tents.
• Hydration: Inner compartment for a water bladder (up to 3 L, not included) and quick access to a water bottle.
• Weather protection: Integrated rain cover keeps your gear dry.

Durability and materials

The backpack is built to withstand time and heavy wear. The assembly of the various parts has been tested to withstand high tension, particularly when the bag is fully loaded or manipulated repeatedly. The zip thickness has been redesigned to improve strength and durability. The bag is also repairable, and spare parts are available.

• Base: Polyamide-reinforced bag bottom.
• Main fabric: Exceptionally durable Cordura® Ripstop fabric (500 denier), also used on the side pockets and the areas most prone to wear.
• Composition:
  • Main fabric & Yoke: 100.0% Polyamide
  • Lining & Bag cover (Rain cover): 100.0% Polyester
  • Webbing: 100.0% Polypropylene
  • Coating: 100.0% Polyurethane
  • Foam core: 100.0% Ethylene Vinyl Acetate (EVA)
  • Foam part: 100.0% Polyester
  • Comfort foam: 100.0% Polyurethane

Technical specifications and dimensions

• Height: 88 cm
• Width: 54 cm
• Depth: 43 cm
• Weight: 2.88 kg (weight of our benchmark sample)
• Warranty: 10 years

Care and storage instructions

• Cleaning: Hand wash only (maximum temperature of 40°C). Cleaning with a wet cloth is often sufficient.
• Drying: Dry in the open air. Do not tumble dry.
• Prohibited: Do not put this backpack in a washing machine. Do not dry clean, iron, or bleach.
• Storage: Store your rucksack in a dry, ventilated place away from direct light.

Responsible performance

At Simond, performance and responsibility go hand in hand, from the very first sketch. Built to last, our products must prove themselves through rigorous testing, both in the lab and on the mountain. In the lab, extreme conditions are simulated, and in the field, dozens of prototypes are pushed to their limits each season in the most demanding real-world environments.

Simond also prioritizes repairability and environmental impact through eco-design. Every product is developed with its full lifecycle in mind, minimizing waste, lowering our footprint and guaranteeing its repairability.