Nitron 12 Rucksack

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Small, light, and built to move fast—Rab’s Nitron 12 is a stripped-back pack that doesn’t skimp on performance.

Rab says: 

This is our definitive, streamlined pack for minimalist day hikes and moving at pace on technical trails. Built with a comfortable vest-style harness and malleable, body-hugging back system, it remains stable and enables dynamic movement on all terrain. With a lightweight, modern design and on-the-go access to pockets, it keeps you pushing onwards without holding you back.

Our Verdict

At just 435g, the Nitron 12 is the lightest in the range but still manages to pack in a surprising amount of function. The vest-style harness hugs the torso closely and doesn’t shift around when scrambling or picking up the pace, while the EVA back panel adds just enough structure for all-day comfort without losing flexibility.

At 12 litres, storage is minimal, but the layout works. I could fit a layer, snacks, and a soft flask without issue, and the harness pocket is ideal for a phone or GPS unit. The panel-loading main compartment gives quick access to kit, and while there’s no large stash pocket like on the larger versions, pole attachments and hydration compatibility are still there—nice to see at this size.

For light and fast missions or as a race-ready mountain pack, it’s hard to fault. You get the same stable, close fit as the larger Nitrons, but in a more agile, no-fuss build.

Ideal for fast-moving days where every gram counts, but you still want function and fit dialled in.

– Reviewed by Ultralight Outdoor Gear

Features

• Body hugging harness for close fit and mobility
• EVA back panel for comfortable and flexible fit
• Panel loader with zipped entry
• Double chest strap for added security especially at high pace
• Secure zipped harness pocket for easy access on the move
• On the go z-pole attachment
• Additional standard walking pole carry
• Hydration compatible-fits 3L bladder

Specifications

• Weight: 435g
• 18″ / 46cm

Material & Construction

• 100D ROBIC® Nylon Ripstop with Hydrosheild Coating
• 70D X 140D Nylon with TriShield Coating
• Main: 100% Nylon, Lining: 100% Polyester

Help & advice:

• The Ultimate Guide to Choosing an Ultralight Rucksack
• Time-Saver Guide to Choosing a Rucksack
• About Rab
• Rab Backpack Size Guide
• Rab Sustainability and Responsibility