To improve your shopping experience today and in the future, this site uses cookies.
I Accept Cookies
The Instinct Alpi 40L Backpack is designed for trail running, ski touring and mountaineering. With a high-sitting fit, great stability and intuitive storage, this pack is ready for any adventure—whether it's a fast hike or a multi-day expedition.
The Instinct Alpi 40L Backpack is designed for trail running, ski touring and mountaineering. With a high-sitting fit, great stability and intuitive storage, this pack is ready for any adventure—whether it's a fast hike or a multi-day expedition.
Instinct

Instinct Alpi 40L Backpack Black/Green

£248.40 £270.00 8% off
Earn
in Customer Rewards when you buy this item today
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
Earn Rewards
When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

90-day returns period

We hope that you are perfectly happy with your order from Trekitt, but we understand that you may want to return your purchase. We offer a 90 days return period from the date of purchase, and endeavour to process all returns within 48 hours of receipt.

We do not offer a free returns service. Therefore, all customers are responsible for any postage costs when returning any goods (excluding warranty returns).

For your convenience, follow here to the Royal Mail Returns Portal to arrange return postage for your items. Please use our warehouse returns address (Returns, Unit H&J, Moreton Business Park, Hereford, HR4 8DS) when completing the form.

This is not a Trekitt operated service.

The Trekitt Returns Policy Includes...
A 90 day return period and the Trekitt 2-year Common Sense Guarantee.

Exemptions
PPE (Facemasks, Climbing Equipment etc. ), Food Goods, Accessory Cord, Socks & Underwear can only be returned if they have not been worn and/or removed from their original packaging with all swing tags still attached. If there is any sign or possibility that the goods have been used, tampered with or contaminated in any way, then we cannot accept a return on the grounds of consumer safety. Zips are typically not covered under a manufacturer's warranty.

The above does not affect the Consumer Contract Regulations. Click here to read more.

Instinct Alpi 40L Backpack Black/Green

Season:AW25

Brand:Instinct

Code:IN_BAG_4XHP

What is the Instinct Alpi 40L Backpack?

The Instinct Alpi 40L is a high-performance alpine backpack built for versatility and endurance. Whether tackling steep mountain trails, skiing through backcountry powder, or setting out on a multi-day trek, this pack adapts to your needs. Its unique high-sitting design ensures stability and balance, making it ideal for fast-paced adventures in rugged terrain while providing easy access to essential gear.

What is it made of?

The Alpi 40L is built to handle harsh alpine conditions without weighing you down. It's made from a premium four-layer nylon diamond ripstop, which means it's extra strong against scrapes and rough terrain while still lightweight enough for fast-moving adventures. This fabric also resists tearing, so it won't easily rip apart if you snag it on sharp rocks or ice. The pack features 3mm perforated EVA padding in the back panel and shoulder straps for all-day comfort. This lightweight but cushy material reduces pressure points, making heavy loads feel more manageable. The shoulder straps and back panel also use 3D mesh, which boosts airflow and wicks away sweat, keeping you cool and dry even during intense climbs. To ensure the Alpi 40L lasts through countless trips, all webbing points are reinforced with bar tack stitching, a technique used in high-stress areas to prevent wear and tear. This extra reinforcement means you can confidently haul heavy loads, secure gear with tensioned straps, and navigate rugged terrain without worrying about seams giving out.

What type of back system is used?

The Instinct Alpi 40L Backpack is designed with a back system prioritising stability and mobility, ensuring a close, body-hugging fit that moves with you. The anatomically cut, one-piece back panel and shoulder straps create a seamless connection between your body and the pack, reducing bounce and improving weight distribution. It provides better control when navigating technical terrain, whether scrambling up a ridge, skiing through tight tree lines, or covering long distances on foot. Load adjuster straps allow you to fine-tune the fit, helping you position the weight higher or lower depending on the activity and load. This adaptability prevents strain on your shoulders and lower back, keeping you comfortable even during extended adventures. The ergonomic design also maintains freedom of movement, so you can reach, stretch, and twist without feeling restricted. With a balance of snugness, breathability, and weight efficiency, the Alpi 40L is built for high-intensity alpine activities where stability and comfort are essential.

What are its features?

Lid Type

The Instinct Alpi 40L Backpack features a Roll-Top Lid with an Independent Roll-Top Pocket (12L). Additionally, it has a Removable Floating Lid (Top Pouch), which provides extra storage and can be detached when not needed. This combination allows for volume expansion, compression, and versatility, making it ideal for fast-and-light missions and multi-day adventures.

Entry options

The Instinct Alpi 40L Backpack's primary access is through a large back door opening. This design allows instant access to the main compartment, making retrieving or organising gear easy without digging through the top.

Storage and Organisation

The Alpi 40L pack features dual upper bottle pockets at the front, accommodating 750ml bottles or 600ml soft flasks. This design ensures hydration is always within reach, eliminating the need to stop and rummage through the main compartment.

Below these, two extra-large vertical zippered pockets provide secure storage for essentials such as energy bars, maps, gloves, or a lightweight shell jacket, keeping them protected yet easily accessible.

Complementing these are two extra-large pre-shaped mesh pockets made from a stretchy yet durable material that expands to hold additional soft flasks, snacks, or even a pair of lightweight gloves.

Fully utilised, the front system allows for carrying up to four bottles or flasks, making it ideal for long days in the mountains where staying hydrated is crucial.

The adjustable sternum straps, which can be moved along a piping rail, provide a customisable fit to ensure stability while running or hiking, preventing bounce and unnecessary movement.

Additionally, pole and ice pick attachments are strategically placed at the front, allowing for secure yet rapid access to trekking poles or an ice axe when navigating challenging terrain.

At the back, the pack offers a dedicated, independent 3L hydration bladder pocket, covering the entire backside surface to distribute weight evenly.

The large back door panel allows instant access to the main compartment, making gear organisation quick and efficient. At the same time, an overlapping mesh pocket inside provides an easy stash spot for small items like gloves or sunglasses.

Side straps allow for secure ski carrying, and additional daisy chains on the back, along with interchangeable straps, create a versatile system for attaching crampons, snowshoes, or even a snowboard.

A webbing strap loop at the top of the shoulder strap ensures an additional ski attachment point, keeping everything locked in place for technical ascents and descents.

The independent roll-top compartment provides an extra 12 litres of storage, expanding the pack's carrying capacity for multi-day trips.

The removable top pouch, featuring two zippered compartments, is perfect for storing smaller essentials like a first aid kit, a knife, or a headlamp.

A stretch mesh pocket over the top automatically closes, creating an instant-access space for a jacket, poncho, or even a solar battery panel.

Compression Options

The Instinct Alpi 40L Backpack is designed with a highly adaptable compression system, allowing for a secure and stable load.

A key feature is the double "V" side straps, a design that uses elastic lacing to create a bounce-free fit. This design is beneficial for fast hiking or running, as it keeps the pack snug against your back, eliminating unwanted movement.

By tightening the nylon webbing, the entire system locks in place instantly, ensuring that the pack maintains its streamlined, close-to-body fit even when carrying a lighter load.

For additional control, adjustable side compression straps work to reduce bulk and stabilise the load, preventing shifting weight that could throw off balance, especially on uneven terrain.

This system is further complemented by interchangeable straps on the back, which help manage volume and provide secure attachment points for crampons, snowshoes, or a snowboard without adding unnecessary bulk.

The independent roll-top closure adds flexibility to adapt to varying load sizes. When the extra 12 litres of storage in the roll-top are not needed, it can be compressed down for a more compact shape, preventing excess fabric from flapping and keeping the pack as streamlined as possible.

For fine-tuned weight distribution, load adjuster straps on the shoulder harness allow the pack to be pulled closer to the body, ensuring better balance and reducing strain on the shoulders and lower back.

By bringing the load inward, this feature helps improve stability during technical climbs or when moving at speed.

Is the rain cover included?

No, the Instinct Alpi 40L Backpack does not include a rain cover. However, the four-layer nylon diamond ripstop fabric provides high water resistance, offering some protection against light rain and snow. A separate rain cover is recommended for heavy downpours or extended exposure to wet conditions.

Features:

  • High-sitting ergonomic design for stability and comfort
  • Double "V" side straps for a no-bounce fit
  • Large back door access for easy gear retrieval
  • Expandable 12L roll-top compartment
  • Removable top pouch with zippered pockets
  • Hydration-compatible with a 3L bladder pocket
  • Multiple gear attachment points for poles, ice picks, and callipers
  • Side ski/snowboard straps and daisy chains for extra storage
  • Breathable 3D mesh back panel and straps for sweat dissipation
  • Reinforced bar tack stitching for durability
Technical Information

Material: Four-layer nylon diamond ripstop
Padding: 3mm perforated EVA
Volume: 40L (expandable)
Weight: 998g (880g without top pouch)
Hydration Capacity: Independent 3L bladder pocket
Compartments: Main compartment (28.16L) + Roll-top (12.5L)

Sizing Information
Professional Opinion
Product Reviews
Home Expedition Rucksacks Instinct Outdoor Rucksacks