This batch of the Brown Large Backpacks will be ready to ship in October 2025! Secure yours now.
The versatile Large Backpack expands big when you need it to, and stays slim and sharp in everyday life.
The Large Backpack is a companion that'll carry your life in comfort and ease.
Its slim design and sturdy back structure make it an excellent choice for use in the city. Yet the ability to expand and overpack allows it to carry your essentials for a trip to the cabin or beyond. You will most likely not leave the house without this pack for the foreseeable future.
The Large Backpack is a great choice whether you're looking to leisurely explore or observe urban spaces, or go on weekend getaways. A true everyday workhorse of a backpack that is not only fantastic to carry while looking great, but will last for life – joining your journey over the decades ahead.
Handcrafted from high-quality vegetable-tanned leather, this is an item for those who appreciate lasting items, timeless design, quality craftsmanship, and versatility.
Why this pack?
Design
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Made for urban life with a slim profile.
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Outstanding comfort as the leather conforms to your body over time.
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Timeless design that builds character over time as the leathers patinates.
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Meticulously crafted in our workshop in Finland with a passion for quality.
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Engineered for repairability with strong materials that make repairs possible.
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Built to last to leave something for the next generations.
Features
- One protected outer pocket for smaller items
- Comfortable 50mm wide shoulder straps
- Carrying Handle for easy carrying in trains, planes, and buses
- Optional detachable felt sleeve for up to 16" laptops or documents
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Accessory loop for clip-on rear bicycle light
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Expandable capacity with three G-buckle attachment points.
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Attachment points for utility straps integrated into the G-buckle attachment point loops.
Details
Materials and origins
- Cutting and sewing: Handcrafted in Finland
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Leather: Sturdy SOHRE tannery’s European vegetable-tanned bovine saddle leather
- Felt sleeve: Recycled PET felt – made in Finland
- G-buckles: Marine-grade stainless steel – laser cut in Finland
- Roller buckles: Chromed steel – Sweden
- Yarn: Waxed polyester yarn – Italy
- Rivets: Copper-plated steel – Italy
Inside dimensions
Main compartment: Width 30cm, Height 35–48 cm, Depth 13cm
Felt Sleeve: Width 29cm, Height 33cm, Depth 3cm
Volume
14-19 liters
Configurator
Configure your Rucksack
One bag, multiple uses. Choose the backpack either with or without the internal sleeve for seamless work use. As a new addition we are also offering the following combo:
Traveller
When you need to travel light but still carry your essentials, the Traveller Set is the ultimate combo. Pair your backpack with the A4 Field Satchel for a seamless travel experience.
The A4 Field Satchel keeps your work or creative tools—like your laptop, notebook, and chargers—within reach, while your backpack is fully reserved for personal gear. Whether you’re heading out by land, rail, or air, this set is built for agility. We’ve traveled this way many times, and its convenience has earned it a permanent place in our setup.
Use & Care
How should I care for my leather bag?
You can start using your bag straight out of the box. Leather works well even in bad weather conditions, and getting wet is fine as long as it is properly cared for. The harder the use, the faster the patina, but that only adds character to the bag.
Treat with wax every 4-6 months or when the leather feels like it's drying. Wipe the leather to clean it. With a cloth, spread a thin layer of wax on the leather. Allow the wax to permeate overnight and then polish the remainders off with a cotton or wool cloth. The scent of tar will fade away in a couple of days; if a lot of wax is applied, this will take longer.
We recommend using natural products like beeswax or natural oils. Synthetic leather protection can block the pores of the leather, reducing its ability to absorb wax and oils, ultimately reducing the lifespan of the bag.
How long is the break-in period of the leather bag?
We believe that leather is the best material for bags because it conforms to our bodies over time and can last for decades while remaining in good condition.
Like all high-quality leather goods, Kasperi bags also have a break-in period. It will take a couple of weeks of active use for the shoulder straps to start forming
