Kasperi x British Millerain – Combining British heritage in hardwearing cotton fabrics and Finnish utilitarian design.
Made in our workshop in Finland from British Millerain's Field Twill, a durable 18 oz dry-waxed cotton fabric.
The Field Twill is dense, structured and shower-proof, with a dry, practical handfeel. It gives the Fold Top a lighter body than full leather, while keeping the same long-use character, repairable construction and leather frame that define our backpacks.
The Fold Top is a choice for everyday life, travel, and outdoor use. Its ergonomic design ensures comfort during extended carrying, while its clean, timeless look works just as well in the bustle of the city as it does on the field.
It's a pack that is built to last, made from materials that can take use and develop character over time. This backpack stands the test of time, by your side for decades of daily use and travel.
The saddle leather frame distributes weight evenly for comfortable carrying of heavier loads. The wide leather straps conform to the contours of your shoulders over time for an exceptionally comfortable fit.
Why this pack?
Design
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Made for everyday use with great load distribution and versatile rigging options.
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Outstanding comfort as the leather conforms to your body over time.
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Timeless design that builds character as the leather and cotton patinates and softens over time.
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Crafted in Finland with a passion for quality at our own Workshop in Hämeenlinna.
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Engineered for repairability with structures that make servicing possible.
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Built to last with strong materials to leave something for the next generations.
Features
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Six sturdy attachment points for attaching hiking equipment, fishing rods or camera tripods.
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Shower-proof and dry waxed Field Twill cotton body for everyday weather resistance.
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Front pocket to keep your everyday carry conveniently at hand.
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Detachable laptop sleeve for up to 17” laptops or documents.
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Adjustable capacity with the extension strap that’s stored inside.
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Built-in carrying handle for easy travel in buses, trains and planes.
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D-ring key loop for never losing your keys.
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Stay safe and visible by attaching a rear bicycle light to its attachment point.
Details
Materials and origins
- Cutting and sowing: Handcrafted in Finland at the Kasperi Workshop
- Frame and back: Sturdy SOHRE tannery’s vegetable-tanned bovine saddle leather
- Folding part: Durable 18oz Field Twill 100% cotton by British Millerain
- Laptop 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 brass and steel – Italy
Inside dimensions
Main compartment: Width 30cm, Height 45–60cm, Depth 16cm
Front Pocket: Width 20cm, Height 14cm, Depth 4cm
Felt Sleeve: Width 29cm, Height 43cm, Depth 4cm
Volume
27 liters at maximum capacity
Sets
Configure your rucksack
One bag, multiple uses. Choose one of the sets below and configure your pack best to suit your lifestyle. All of the sets below include our Leather Wax.
Minimalist
Your daily needs are covered with the supplied two short utility straps. For longer items attach them on the same side. Or one on each side for smaller items like the Kuksa or the Puukko. Light and simple.
Cargo Hauler
Featuring a full set of utility straps – the Cargo Hauler set turns your pack into a real Swiss army knife whether you're carrying gear from camera tripods, fishing rod's to hiking gear. Four short utility straps for smaller or long items to the sides and two long utility straps for bulkier items to the bottom.
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.
Field Chef
The Field Chef is for culinary adventures in the great outdoors, from your favourity weekend nature hideout to more remote trails out there. This set includes two short utility straps, the full-tang Field Kitchen Knife designed by us and made by Roselli, a stainless steel Field Pot, and a handcrafted cutting board.
Field Barista
This is our go-to set for most of our day hikes, from the Nordic woods to the Finnish archipelago. The Field Barista set includes two short utility straps, the Kasperi Puukko, Coffee Pot + Coffee, and the Kuksa. The simple brewing process creates a full-bodied and creamy coffee. Find the best spot, make a fire and enjoy campfire coffee.
Explorer
The Explorer set is for those who seek out new adventures. This set features the versatile tools the Kasperi Axe and the rugged Kasperi Puukko.
Designed by us and made by Roselli, both tools feature their lifetime repair service. This set also includes the long utility straps and short utility straps for versatility.
Prepare for roaming the uncharted areas with the Explorer set.
Wanderer
The Wanderer set equips you for discovering your surroundings at a relaxed pace. The wanderer is not in a hurry, it's all about observing what is around you. About being present in your life's most unforgettable moments. By your side you will have the Kasperi Puukko, Coffee Pot + Coffee, Lapuan Kankurit Metsä Blanket and Kuksa as well as a full set of straps. Embrace the journey.
Voyager
The Voyager is for the ultimate outdoors person who is willing to go further than others. While on the move a full set of utility straps ensure versatility on the move. For setting up camp you have the Kasperi Axe and Kasperi Puukko by your side. Preparing for dinner you'll have the field chef's essentials: the Field Knife, a Field Pot, and a compact field cutting board. The Coffee Pot, Kuksa and Coffee for the moment after your culinary dinner. Lapuan Kankurit Metsä Blanket for enjoying your time at camp.
Background
A 150 years in materials development. 7 years of product testing.
In 2019, we made the first prototype with this material: a Fold Top combining leather with 18 oz dry-waxed Field Twill cotton from British Millerain specially made for bags and luggage.
British Millerain is based in Greater Manchester. A city that was once known as Cottonopolois, the undisputed global center of cotton manufacturing. With ships sailing in and out of the port of Manchester bringing in raw materials and shipping out a third of the global supply of finished cotton fabrics, the city was intimately connected to maritime needs through trade. The British Millerain twills were developed with the traditional sailcloths in mind, where waxes were used to make natural fabrics more resistant to weather.
After seven years of our own testing, we decided to take it into production as we deemed it tough enough to stand next to leather. The 18 oz Field Twill is a cotton fabric similar to canvas, with a dense and tough diagonal weave. It gives the backpack a lighter body, while keeping the utilitarian character Kasperi is known for.
Cut and sewn at our workshop in Hämeenlinna, Finland. Familiar, but not quite like anything we have made before.
Use & Care
How should I care for the fabric parts?
The folding part is made from dry-waxed cotton, which is shower-proof and made for everyday weather. For all practical needs and field use it can handle changing conditions, rain, and daily use. The fabric will soften, mark and develop character over time. This is part of how cotton twill ages.
For maintenance brush of dust and sand, and for stains wipe with a damp cloth. The body fabric has a dry wax finish that makes it resist water. Dry wax finishes can be reproofed with special reproofing agents. If you decide to use other waxes, it can result in changing the colour and feel of the fabric, which should be taken into account.
How should I care for the leather parts?
The leather works well in changing everyday weather, and getting wet is fine as long as it is properly cared for. Let the bag dry naturally at room temperature. Do not dry it with direct heat.
Treat the leather lightly with wax every 4–6 months, or when the leather feels dry. Wipe the leather clean, spread a thin layer of wax with a cloth, let it absorb overnight and polish off the remainder with a cotton or wool cloth.
We recommend natural products such as beeswax-based leather care or natural oils. Synthetic leather protection can block the pores of the leather. This can reduce the leather’s ability to absorb wax and oils, ultimately reducing the lifespan of the backpack.
How long is the break-in period?
The Field Twill is a structured fabric similar to tough cotton canvas. It will maintain much of that character, slightly softening over time. The leather back frame and shoulder straps still have a break-in period.
It will take a couple of weeks of active use for the shoulder straps to start forming to your body. If you experience any pressure points, squeeze the straps lightly with your hands at the pressure points to help them form faster.
Closing and opening the G-buckles is also stiff at first. As the leather loops soften and form over time, it will become fluid.
With proper care and use, the backpack develops its own character. The leather patinates, and the dry-waxed cotton softens and records use.
What about repairs or service?
We believe in the right to repair. Every aspect, from structure to material thickness, is considered with repairability in mind.
The hardest-wearing parts, such as the shoulder straps and back frame, are made from strong vegetable-tanned leather. The whole structure is designed so that servicing is possible.
Because our bags are designed to last for decades, they may require servicing at some point. We offer a repair service for our bags and backpacks.
