What is the Trion Light 38?
The Trion Light 38 is a super light, versatile and tough pack for alpine ascents, climbing and general mountaineering. Despite its initially simple looking design, the Trion is loaded with clever features to make your time at altitude that much more enjoyable.
What is the backsystem?
The Trion uses Mammut's Motion T frame to ensure the pack carries weight effectively and doesn't simply flop to one size when not fully packed. If you require a lighter, more flexible pack for technical climbing, you can remove the frame entirely. Covering this frame is a comfortable padded foam with mesh layered over the top; this prevents items jabbing you in the back when fully packed and also wicks away sweat during use. You'll notice from the images that the centre of the backpanel is hollow — this is to allow air to circulate, reducing the 'wet back' feel when you take the pack off.
Moving down, a wide, padded hipbelt takes the weight off your shoulders during long approaches, yet can also be removed for more technical climbing. The padding on the hipbelt can also be adjusted length-wise to suit different sized users.
What are the features?
Starting at the top, you've got a height adjustable lid with internal and external compartments to store bits that you need quick to hand. To reduce the weight of the pack, the lid can be removed and access to the pack can be achieved by a roll-top closure which still provides weather resistance for your kit. You've got a large front compartment for safety equipment to allow quick and easy access, while compression straps allow you to cinch the bag down when not fully packed to stop your kit sloshing about and throwing you off balance. Reinforced side ski attachment points, 2 axe attachment points and a trekking pole carrier store all of your tools and accessories safely and comfortably. Lastly, a sleeve stores a hydration system if you're not a fan of bottles.
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Rope fixing strap under lid
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Hydration system compatible
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Compression straps
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Trekking pole carrier
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2 ice axe attachments
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Side ski attachment
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Large front compartment
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Roll-top closure
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Two lid pockets
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Padded hipbelt w/ extendable padding
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T-frame
Getting the correct fit for your rucksack is as important as getting the fit right for your boots. A badly fitting pack can inflict misery and discomfort and completely ruin your adventure. This guide is designed to help you get the best fit and comfort from your chosen pack so that carrying all your kit becomes a pleasure and not a chore.
ADJUSTING THE BACK LENGTH
If the pack has an adjustable back length, adjust this to your correct level. Your back length is not related to your height but your torso length. Many packs, and specifically the bigger and more technical packs are available in different back lengths or feature adjustable back systems. Contrary to popular belief, your torso length and not your overall height is the key to getting a well fitted pack. Tall people don’t necessarily have long torsos, just as shorter people don’t always have a short torso length.
Your torso length can be found by measuring from your C7 vertebra (the bony protrusion at the back of your neck when looking down) to the height of your iliac crest (top of your hip bones, where you put your hands on your hips). This measurement will give you an idea of which pack back length to choose.
Once you've got the back length sorted, either by selecting the correct size pack or adjusting the back system, you can begin to follow these simple steps to help achieve a comfortable carry.
LOOSEN OFF ALL STRAPS
Before you start fitting the pack, loosen off all the straps as this will make it easier to get the correct tension later.
TIGHTENING THE HIPBELT
Fasten the backpack hipbelt, the general position is the same as where you’d put your ‘hands on hips’ This area is called the pelvic girdle, and what you can feel when you rest your hand on the area is the bony protuberance, the iliac crest. The iliac crest can support the weight from a pack comfortably, and for sustained periods. The padded section of the hipbelt should encompass this and fit securely.
Tighten the straps so the hipbelt feels secure and held firmly around your body. Ensure that the lumbar pad is centered to your lower back to give you maximum support. Remember that your hips carry most of the weight of the pack, so this should be firm but comfortable.
ADJUSTING THE SHOULDER STRAPS
Next, adjust the shoulder straps, pull them until they start to become snug, but ensure that they are not too tight as to lift the pack off your hips. Remember tightening them will stabilise the pack but will increase pressure over the shoulders. If the back length of the pack is correct the shoulder straps will be flush to your shoulders whilst the hipbelt sits in place comfortably. The point where the shoulder straps attach to the main body of the pack should be roughly half way down your shoulder blades; this ensures that the shoulder straps rolls evenly over the top of your shoulders to distribute the weight correctly.
FASTENING THE CHEST STRAP
Fasten the chest strap and pull until taut but not tight, the elastic section should not be extended. This helps keep the shoulder straps from catching in your shoulder joints and keeps the stability of the pack when moving over rough ground.
ADJUSTING THE TOP TENSIONERS
Top tensioner straps link the shoulder straps to the top of the pack. When tightened, their main function is to stabilise the top part of the pack. The optimum angle for these straps in 45º, but they will stabilise the load even when horizontal or at a more obtuse angle. Tighten them until you feel the top part of the pack rest against your pack, over tightening them will create excessive pressure on the front of your shoulders.
ADJUSTING THE SIDE TENSIONERS
Side tension straps are linked to the hipbelt. By tightening these straps you can stabilise the load but reduce the hipbelt flexibility. Where balance is critical tightening them can help you feel more secure. However, if you are striding out over easy terrain it’s better to loosen these straps to allow full hip flexibility.
ADJUSTING THE SIDE COMPRESSION STRAPS
Side compression straps come next, pulling these tight does two things: firstly, it stabilises the load, secondly it can lift the lower part of the pack, repositioning the load closer to your back.
ADJUSTMENTS ON THE GO
Following these steps should give you a comfortable but secure fit on your pack. Sometimes adjustments will need to be made on the go depending on the terrain or the load you are carrying. The perfect fit is very much a personal preference so experiment with different tensions on the pack to find what suits you best.