Papa Nui Grease Monkey Cap


or 4 payments of £20.00 with Clearpay How it works

The Papa Nui Grease Monkey Cap is a reimagined A-3 Mechanic’s Cap that comes in 9oz Japanese denim with an olive visor and olive contrast stitching. As comfortable and practical as an original, it can be worn with its visor down, or up in true 1940s GI style.

SKU: 3557 Categories: , Brand:

The story of the Papa Nui Grease Monkey Cap

The Papa Nui Grease Monkey Cap is a reborn version of the classic A-3 Cap. A new release for this season, it comes in a beautiful 9oz Japanese denim that is made from 100% Zimbabwean cotton.

It comes with the exceptional quality and long list of details you’ve come to expect from Papa Nui Caps, including a contrasting Olive drab herringbone twill flip up visor, herringbone twill sweat band and match taping. The piece is brought together with contrast olive stitching throughout.

Despite being issued to aircraft mechanics, the original A-3 Caps became popular with anyone who could get their hands on one due to their comfort and practicality. The Grease Monkey is no different and can be worn with visor down or flipped up, in true 1940s GI style.

The Grease Monkey Cap is made ethically in Japan by John Lofgren & Co.

Key Features

  • Made in Japan by John Lofgren & Co.
  • 9oz Japanese Denim construction
  • 100% Zimbabwean cotton
  • Herringbone twill sweatband
  • Olive highlight thread
  • Hino Maru internal country of origin patch
  • Sizes Medium (57-58cm) and Large (59-60cm)
  • Cold wash/soak to shape or stretch, hot wash/soak and tumble dry to shrink

Medium, Large


Japanese Denim, Heringbone Twill






Papa Nui Cap Co


Coming from the South Pacific and taking cues from vintage military, utility and surf styles, Papa Nui Cap Co. is the creation of John Tesoriero. Drawing on decades of experience and an enviable collection of vintage clothing and militaria, each cap has a story all of its own. Every cap in the collection is designed and tested on the Atoll before being manufactured in Japan by John Lofgren & Co to the very highest quality. Designed to be rugged, handsome and to last a lifetime, every cap will age beautifully, reflecting the life of its wearer. As John himself says, “anything else is just a cap“.


Papa Nui caps are low-maintenance pieces designed for rugged wear.

When necessary, we recommend a cold machine wash and line dry. If you are happy with the sizing of your cap, avoid tumble drying as this may result in slight shrinkage.


Sizes Medium (57-58cm) and Large (59-60cm).

To find out more about how to measure your head to get the sizing of your cap perfect, see this detailed post about Papa Nui sizing. Need more information on how to fine tune the sizing of your Papa Nui cap? Our sizing page also contains information about how to stretch or shrink your cap.

Before attempting to stretch or shrink your cap, please see the Care section to see if this is possible with your model.

Shipping & Returns

We want shopping with Those That Know to be easy. To make sure you’re completely satisfied with your experience with us we have a simple Shipping & Returns process.


We use Royal Mail to ship orders. We charge a flat rate shipping cost per order based on your location. This is:

  • UK – £5 (Delivery in 48 hours)
  • Europe – from £6 (Delivery in 3-5 working days)
  • Rest of World – from £6.50 (Delivery in 6-7 working days)

You can find out more about our shipping methods and international zones on our shipping page.


We’re happy to accept returns or exchanges of orders in new and unworn condition with original packaging within 14 days of receipt. To return your order, please contact us first at [email protected].

For more information about the process, see our returns page.