on saleKaweco Classic Sport Fountain Pen - Green

Product Code KAW-10000487

In Stock

out of stock

on saleKaweco Classic Sport Fountain Pen - Green

Product Code KAW-10000487

In Stock

out of stock

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Kaweco Piston Cartridge Converter
Add a Refillable Converter + $7.00 Kaweco Piston Cartridge Converter

Kaweco Piston Cartridge Converter

Product Code KAW-10001349

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Kaweco Sport Clip - Black
Add a Clip + $4.00 Kaweco Sport Clip - Black

Kaweco Sport Clip - Black

Product Code KAW-11000154

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Kaweco Caramel Brown - Ink Cartridges
Add Disposal Ink Cartridges + $4.00 Kaweco Caramel Brown - Ink Cartridges

Kaweco Caramel Brown - Ink Cartridges

Product Code KAW-10000259-08

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The Kaweco Classic Sport is a pocket-sized fountain pen that when posted transforms into a full-sized pen that easily fits in your hand. This solid green fountain pen comes with a gold-plated steel nib and an ink cartridge to get you started writing right away! It uses short standard international ink cartridges, or you can easily convert it to an eyedropper pen with a little bit of silicone grease. Converter and optional clip sold separately.

Note: This pen comes with an ink cartridge stored in the body. If it doesn’t fall right out, you can get it loose by giving the body a few solid taps on a hard surface.

Click here to shop all compatible short standard international ink cartridges.

Fountain Pens

Whether or not the barrel of the pen is translucent, allowing you to see the ink and filling mechanism inside.

Body Material
Cap Rotations

For pens with a screw-cap closure, how many rotations it takes to uncap/recap the pen.

Cap Type

How the cap is opened/closed from the barrel of the pen. Some common options include Snap-Cap, Screw-Cap, Magnetic Cap, or Capless (no cap).

Compatible inks & refills

Which ink this pen will accept. Choices include bottled ink and various styles of pre-filled ink cartridges.

Bottled inks, Standard international short cartridges
Filling Mechanism

How the pen fills with ink. Click here to watch our video tutorial on common filling mechanisms.

Cartridge, Converter, Eyedropper
Grip Material
Nib Size
Extra-Fine, Fine, Medium
Nib Color
Nib Material

Whether or not the cap fits securely onto the back of the barrel when open.


Whether or not the nib/tip can retract into the body of the pen (usually for click or twist-open style pens).

Diameter - Body
11mm (0.43in)
Diameter - Cap (without clip)
14mm (0.55in)
Diameter - Cap (with clip)
18mm (0.71in)
Diameter - Grip (mm)

Measured from the place most people choose to rest their fingers, which varies with each pen.

Length - Body

The measurement from the back end of the barrel to the tip of the nib.

100mm (3.94in)
Length - Cap
70mm (2.76in)
Length - Nib

The measured length of the visible portion of the nib when it is installed in the pen, from grip to tip.

17mm (0.67in)
Length - Overall (Closed)
105mm (4.13in)
Length - Overall (Posted)

When the cap of the pen is posted onto the back of the pen body, this is the measurement of the entire pen including the nib.

132mm (5.20in)
Weight - Body

If a converter is included with the pen, this weight is reflected in the total.

6g (0.21oz)
Weight - Cap
4g (0.14oz)
Weight - Overall (g)
Max Ink Capacity - Cartridge

The maximum volume of ink that can fit in the pen when using a cartridge.

Max Ink Capacity - Converter

The maximum volume of ink that can fit in the pen when using a converter.

Max Ink Capacity - Eyedropper

The maximum volume of ink that can fit in the pen when filling the entire barrel of the pen via eyedropper.


Customer Reviews

Based on 36 reviews
A gift pen - he loves it

My son talked me into getting one of these for myself, and I just love how it writes. Smooth as silk. So I got him one as a gift and he likes it as much as I liked mine. Perfect little pocket pen that is tough enough to actually carry in your pants pocket and yet writes the way you'd want it to write. And if you lose it, it doesn't break the bank to replace it.

Leisa B.

Love these pens! Smooth writing, easy to change the cartridge.

s b.
first Kaweco - it's saving me a lot of money

I have eyed one of these pens for years, but didn't see the need for it -- until I lost a couple of much more expensive pens from out of my pockets. When I lost my new Custom 74 Pilot, that did it -- the pen was eventually found, but I had bought one of these as my daily carry and have decided my beloved pens have to stay home or at least only come out dressed in a briefcase or sling bag. But I often don't carry a bag, so needed something *this small.* And it is small -- if you have one of the tiny Apica notebooks, this pen, when capped, is about 1/4 taller than the notebook. For me, this is perfect. I did buy the converter, though I think now it was a complete waste of money -- it's far too small to bother with when making the pen into an eyedropper has been perfect for me -- good silicone grease on the threads and nary a leak. I did not buy the clip as I think that just makes me more likely to put the pen somewhere it is again likely to separate itself from me, and without a clip, there's less bulk in my pocket. And by pocket, I mean the front indentation that Levi's considers a pocket on women's jeans. The Kaweco lays flat in that indentation and doesn't pop out at all. I bought the M nib and am sorry -- should have watched Brian's video before I chose -- the medium really is fatter than I bargained for but that's on me. The nib is very smooth. I have used several inks in it: Burma Road Brown is great, El Lawrence seemed a little too dry, Zhivago was good and it always flows well for me, and Eel Black was good. I like this so much and the ink capacity is so generous that in fact I am going to buy a second one and fill it with either Carbon Black or Document Black to use as a sketching/cartooning/doodling pen, and just keep this green one as my notes-on-the-fly EDC pen. For a functional, useful tool, $25 is a fair price -- and, if I lose it, I may be able to replace it without too much pain. I have fairly small hands, and the pen works for me posted or unposted, which is how I usually use it. If I need to write anything of length, the lightness of the pen makes it less comfortable, but your results may vary. I have had zero trouble with leaking; the nib is smooth; the cap does seem to tend to unscrew itself a little, but that may be because it's in that front pocket; it works with a couple of my crankier Noodler's inks. What's not to love?

Mary K.
Terrific Small Pen

Despite its small size, this pen delivers big! It's a pocket pen, but I bought it as a small purse pen. It fits in my smallest handbags, but writes like a full size pen when it is posted. It posts very easily, but it does need to be posted. I am not usually a 'poster' but find it natural to post the Kaweco Sport. I bought a fine nib as several reviewers said the medium nib writes a bit on the broad side. I like broad nibs, but opted to trust that the fine nib would work better with a pen that I reach for to fill out forms, jots notes on mediocre paper, etc. This fine nib writes smoothly and writes well even on newspaper puzzles. No feathering. It's a pleasure to use and since the cap screws on, it feels safe to carry around in a bag (or pocket). Even with jostling, I haven't seen any ink in the cap. I saw the green pen in Goulet's March ad showcasing green pens for Spring, I think it was. Love this particular green color! I have Noodler's Green Marine Ink it. As most of my pens are black, yet I don't use black ink, matching ink to the pen isn't something I do. Until now! It's fun to have green ink in a green pen. The only other time I think about coordinating an ink with a pen is with my Twisbi ECO � it's pretty cool to look at a favorite ink sloshing around in the pen. Noodler's Blue is really pretty and a great ink. (For the Twisbi, chose an ink you want to look at for a long time � the ink capacity is huge.)

great product

arrived on time and the packaging was very cute. it's a great beginner pocket fountain pen.

FAQs about Fountain Pens

How do I fill a fountain pen with ink? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It depends on the pen's filling mechanism, which you can find in the Technical Specs section above. 

Here's a quick definition of the most common filling mechanisms:

  • Cartridge - A small, disposable, sealed plastic reservoir that holds fountain pen ink. These come pre-filled with ink, and typically you just push to insert them into place and you'll be ready to write! Check out our quick guide here.
  • Converter - A detachable and refillable ink reservoir that allows you to use bottled ink in a cartridge-accepting pen. Typically you will install the converter into the grip section, dip the nib/feed into the ink, and twist or pull the converter knob to draw ink into the converter. Here's a video for how to fill a cartridge/converter pen using a LAMY pen as an example.
  • Eyedropper - A pen that utilizes the entire barrel as a reservoir for ink. Ink is directly filled into the barrel, allowing for a high ink capacity. Here's a video on how to do it!
  • Piston - A type of filling system that uses a retracting plunger inside a sealed tube to draw ink into a pen. They are typically either twist or push-operated. These pens cannot accept cartridges or a converter, and only fill from bottled ink.
  • Vacuum - A push-style piston that uses pressure to fill the large pen body with ink. They seal the ink chamber when closed, making it ideal for flying without risk of leaking. Check out our video on how to use a vac filler here.

Check out more info on these filling mechanisms including a video on how to fill each one on our blog.

How do I clean a fountain pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It depends on the filling mechanism, but it mostly comes down to flushing it out with water, and sometimes a little bit of Pen Flush if the ink is really stuck. 

It's a bit easier to show than to tell, so we've put together a few quick videos showing you the process:

How often do I need to clean my fountain pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

We recommend a good cleaning every 2 weeks, and any time you change ink colors. 

Water will usually do the trick, but we recommend you use our Goulet Pen Flush if the ink has been left in the pen for a while and could have dried up, or when you’re switching ink colors.

My pen won’t write! What do I do? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

First things first... make sure you have ink in the pen! Be sure that the ink cartridge or converter is seated properly in the pen, and that you aren't out of ink.

We always recommend you give your pen a good cleaning first, using our Goulet Pen Flush, or a drop of dish soap in some water. New pens often have some machining oil residue left in the feed, so a good cleaning often does the trick first.

If that still doesn't work, try priming the feed. This consists of either dipping your pen nib and feed in ink, or forcing ink from the converter down into the feed. 

If it’s still not working after that, please reach out to us so we can help! 

What's your return policy? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

You can submit a return request within 30 days of your order date. You can read all our Return Policies here.

To initiate a return, please submit a request at the Return Portal. Our Customer Care team might reach out to you for more information.

Please note we are unable to accept a return of any Namiki or Sailor Bespoke fountain pen for any reason once it has been used with ink. Please thoroughly inspect and dry test the pen before use.