1) We craft the original butterfly leather chair

You can see from the book "Art of the Forties" published by MOMA Publisher

The Museum of Modern Art: Distributed by H.N. Abrams

Page 58 

Art of the forties - butterfly leather chair


Model: Polo London butterfly leather chair


2) What is the most characteristic part of the way we craft, unique for this product? 

In contrast to other replications of the BKF design, we pride ourselves on the quality and longevity of our products. Every chair is handmade of pure 100% argentine leather, four pieces beautifully sewn together and every edge is double stitched to reinforce. Also we made the original butterfly leather cover design keeping the same dimensions and respect the same old original way as it's was crafted.
Now you can see fake replicas, mostly from China and India that are not even close with the original design, they are much more smaller and also the frame is different. 


3) What is the most difficult step while crafting the chair? 

The most difficult part is when we stitch the edge of each leather cover. It's a 4 meters long and 4 cm wide leather piece that it's folded to make the rounded part while is stitched. Another difficult part is when we dye the leather and make the right color as we also depend on appropriate climate conditions.


4) Where are the challenges by crafting it by hand instead of using machines? 

Each leather cover is unique because it's handmade and reflects the moment it was made. Our expert team of designers and leather craftsmen work with the highest quality Argentine hides and leather to ensure every chair retains the quality and customized touch we guarantee our clients.


5) Where do we take the leather? 

The leather is from the Argentine Pampas, north west of Buenos Aires where we get most of our grass fed cow production. That's the reason we have great leather quality as the cows are fed by grass, it's almost organic and no chemicals on their lives.


6) Difference between Polo leather and Vaqueta leather.

Polo leather is almost double thicker than Vaqueta leather, 3,2 mm of thickness VS 1,8 mm. Polo leather is the same leather used to craft polo boots and saddles. Polo leather needs more time of using to mold and get the body shape. The more you use them, the softer the leather becomes. 


7) Difference between Polo London and Polo Malbec color.

Both are dyed using the same brown vegetable tanning but the Polo Malbec has a reddish touch.


8) Shipping company & time:


FedEx shipping butterfly chair

BIG BKF Buenos Aires works with FedEx and DHL Express to bring all of our clients fast and reliable shipping. We guarentee our product to arrive within 5 business days from the time of purchase.

We ship worldwide per 39 USD per chair (11 kg weight)!

As soon as your order is ready to be shipped, we will email you the tracking number. All the packages are shipped from our Workshop here in Buenos Aires, Argentina. 

We do offer shipping discounts on orders of two or more, you will see them before placing your order.


9) Original dimensions from 1938. Butterfly iron leather chair dimensions:

Carrying box and tote bag (chair disassembled):

                42 inches (106 cm) high

                  6 inches (16 cm) wide

                  6 inches (16 cm) depth

Frame open:

                 33 inches (83 cm) height

                 30 inches (76 cm) wide at top (from the middle of the curve)

                 26 inches (66 cm) wide at buttom (from the middle of the curve)

                 42 inches (106 cm) diagonal (from the middle of the curve)

                 31 inches (78 cm) depth

                 32 inches (81 cm) side curves distance same side 

Seat leather cover:

                 33 inches (84 cm) top wide

                 31,5 inches bottom wide (80 cm)

                 50 inches length diagonal (128 cm)

Weight of the chair + leather = 11 kg / 24 lbs.  



10) Tripolina Wooden frame leather chair dimensions:

The Tripolina is a little bit smaller than our Big BKF iron chairs.

Our dimensions:

Chair open:

36 inches (91 cm) height

28 inches (71 cm) wide

29 inches (74 cm) depth

Folded up and inside carrying tote bag = 42 inches high (106 cm)

Seat leather cover:

28 inches (71 cm) top wide

27 inches (69 cm) bottom wide

41 inches (104 cm) length

Weight of the chair + leather = 6.4 kg / 14 pounds

MEASUREMENTS: 36"H x 28"W x 29"D // 91cm H x 71 W x 74 D

MATERIALS: Argentinian saddle leather + lenga fueguina wood + iron hinges

3 FRAME COLORS: Natural light wood, Oak wood and Wengue (black) wood.



11) How we ship the chair?

Packaging Characteristics:

 • Recyclable: Since it is 100% polypropylene.

 • Waterproof: Do not change their physical properties when immersed in water or other aqueous products.
• Resistant to chemicals: It is inert to most chemicals, organic and inorganic, including acids, bases and salts.
• Soft: It resembles, at low weights, the texture of a fabric.
• Porous: Air permeable and impermeable to small solid particles (dirt, dust, etc.) and liquids under certain conditions.
• Heat resistant: Does 
not begin to shrink to 110 º C and melts at 130 º c.



12) The leather will stretch?

With regards to the fit of the leather, after sitting in the chair for a week or so, it should mold and stretch to look like the chairs on the site- the more you use them, the softer the leather becomes. 

13) How to care the leather?

Please note these are guidelines only and ask that you approach any cleaning of hair on hides with caution...
Treat these hides with care and they will last for a long time. Care should be exercised when cleaning. Include your cowhide rug in your normal cleaning routine, simply vacuum or give rugs and cushions a shake outside to remove dust and small dry particles of dirt. Rotate your rug or move to a different location from time to time so that it wears evenly.
If using a damp cloth, wipe with the hair and not against it. You can wipe smoothly in the direction of the hair with a damp (but not wet) cloth with mild soap and water. Do not soak the hide or get it wet. Do not wash in a washing machine. Dry using a towel running along the nap. Avoid vigorous rubbing, do not use saddle soaps, or other leather creams as these may in fact do more harm than good. Protect from direct sunlight and avoid sharp objects and excessive heat.
For common spills like wine, coffee, tea, juice, food, soup etc - soak up spills with a paper towel or sponge immediately. Remove solid matter with the blunt edge of knife by scraping gently in the direction of the hair. Then wipe with a damp (but not wet) sponge or cloth using mild soapy solution. Finally clean with a damp cloth using a diluted 1% white vinegar and 99% water solution (this balances the pH levels) Alternatively to clean spills or extra dirty areas, use a very small amount of shampoo on a damp sponge. Sponge along the nap repeatedly. Rinse the sponge to remove the shampoo and dirt and repeat until the hide is cleaned.
For fat, grease, lipstick, tar and chewing gum - Remove solid matter with the blunt edge of knife by scraping gently. Then apply dry cleaning fluid directly to the affected area on a soft cloth by dabbing gently. Finally wipe with a damp (but not wet) sponge or cloth using a mild soapy solution. We can not guarantee that this will remove your stain, but it the best method of trying. This is done at your own risk.
Finally, Cowhides do not like to be damp or wet, please avoid this. If you have a dehumidifier, use it regularly to remove moisture from the room. On a sunny day you can put your cowhide outside with the underside facing the sun. 
How to care the Sheepskin leather?

We can wash them at home using neutral soap or white soap. It may also be detergent. You rinse well, and in the last rinse you add fabric softener. You extend with all the water and wait for it to dry. You can sprinkle moth spray, on the market are several brands. If the wool is very tangled, before hanging it to dry brush it with stiff bristle brush in the direction of the hair. 



14) Online Purchasing

All of our orders can be placed online through our secure automated store managed by PayPal and/or by clicking the red button at the top right of your screen accessible from any part of our site.

Accepted Payments

We accept all major credit cards for online payment.

 credit cards accepted Paypal


15) Return Policy

We are a small Workshop located in Buenos Aires and every sell is a big investment for us so we stand behind the quality of everything we sell. We make every effort to select and bring hand-made products of the highest-grade materials crafted by highly skilled artisans.

If there is a problem with your order, contact us within three (3) days of receipt via e-mail at info@bigbkf.com If you receive a damaged, defective, or incorrect item, we will work with you to make things right.

As we are in Argentina and the shipping costs are expensive, we do not accept returns but we are more than happy to send a replacement piece instead. Please only purchase our items if you are a serious buyer.


16) Advantages of vegetable tanning

Vegetable tanning is friendly to the environment, which means that a product that can be recycled.

Vegetable tanning is an ancient tradition in Argentina and also around the World, so most of the tanneries have very skilled craftsmen who produce leather

Due to the use of natural tannins, vegetable tanning products are unique and have their own life. They are not the same throughout his life, but constantly changing to better

The colors are vegetable tanning produces rich, warm tones that look completely natural

Vegetable tanned leathers are more valuable, and therefore sell at a higher price compared to chrome tanned leathers

Disadvantages of vegetable tanning

The average time of vegetable tanning process is similar to that of chromium, but can take up to 65 days to produce sheep skin leather.

Vegetable tanned products are more expensive. It requires more skill to tan the leather, which means they are better quality

The colors that can result from vegetable tanned are limited

Once we get the leather from the tanneries we re-select them again and we start cutting the edges and skin parts that are not useful at our Workshop.


17) Click here to watch the VIDEO: How to assemble the Big BKF butterfly leather chair



18) Click here to watch the VIDEO: How to assemble the Big BKF Ottoman


19) Where are the first 2 original butterfly leather chairs? 

In 1938, three architects (members of an association known as Grupo Austral, one officially Catalan, Antonio Bonet Castellana, and two Argentines, Juan Kurchan and Jorge Ferrari Hardoy) presented the chair at a Buenos Aires exhibition. The design so impressed Kaufmann, then an industrial-design curator for the Museum of Modern Art, that he promptly imported one for his parents’ new weekend house, the famous Frank Lloyd Wright’s Fallingwater. He imported another for the museum too. After winning the award in 1943, the American Edgar Kaufman Jr., curator of the Museum of Modern Art in New York (MoMA), bought two chairs for $25 each. One was for the museum's permanent collection, the other for his father's home, a collector of high design, as he had a house in Neutra, another in Mies, and the other third was the famous Falling Water house of Frank Lloyd Wright, which was where the BKF came to reside.  

In 1944, BKF received the Acquisition of MOMA prize, and in 1945 was presented in the Pavilion "Jeu de Pomme" in Paris.

When Knoll acquired the U.S. production rights in 1947, a phenomenon was born. The chair’s metal base and sack seat represented a rejection of what MoMA's current design curator Juliet Kinchin calls “the hard-edged kind of machine aesthetic of modernism in the 1930s.” The Hardoy was also a rejection of good posture and formal clothing. “It’s an impossibly improper chair,” Hannah says. “Women have to have pants on to sit in it.” Young families bought it in droves. By Knoll’s estimate, more than five million copies were produced in the 1950s.


There the chair was seen by the director of the magazine Architecture d'Aujourd'hui, where he asked for it and began to produce them to sell to subscribers.  He used the name “AA chair”, although this was not economically beneficial to the original designers when compared to the production in the U.S. Soon after, the company Hans Knoll started production of the armchairs. The son of a renowned furniture maker in Germany began to produce them under the name Butterfly for the company Knoll International beginning in 1947, until the war stopped production because of the shortage of steel.

In a 1954 article, George Nelson introduced the Tripolina, the chair used by the Italian officers in North Africa, more or less a folding BKF, but with a wooden frame. Thus was established the connection between the BKF and Tripolina. 

Difficult to know exactly where they are but please do not worry about that, we are crafting exactly the same model as the original, keeping the hand art work and high quality leather that was used when these 3 visionary guys launched the chair in 1938.

20) Why it's considered the Messi of the design?

The BKF is considered one of the pieces of the most prominent modernist industrial design and distributed the last half century, and is without a doubt, the Argentine design product most known worldwide. Its impact, both in the design and pop culture, lies in its clear synthesis, achieving universal and timeless qualities. Its creators, architects Bonet, Kurchan and Ferrari Hardoy never imagined the global impact that this chair would have, to the point of becoming a “cult object .

We labeled the Messi of the design. 

 messi of the design butterfly leather chair


21) Social impact: We are committed with our craft work and pass our know how generation to generation 

We teach artisans and then we help them on how to make their own crafts and business. We are happy about people learning the way to craft and not loose our roots and old ways of crafting.