Seuvas Tassa Shirt – Natural


The Seuvas Tassa Shirt is made from the lightest canvas that the brand produce. This makes it an extremely flexible piece that looks fantastic layered or worn with a pair of blue jeans. The lighter weight canvas used in the Tassa Shirt is made at their 130 year old textile factory in Kurashiki City, Japan and used in its natural undyed form, with a smoother feel than the heavier canvasses the brand produce. The shirt is cut in a work shirt style, with a single front pocket and the placket is cut from a single piece of canvas, giving a clean look and plenty of range of movement. It is finished with a single hand-made, custom-designed porcelain button made from clay mined in Amakusa City, Kimamoto. This historic stone has been used in Japanese pottery since the 17th century.

  • Tassa lightweight canvas
  • Natural undyed canvas
  • Amakusa Pottery Stone Button
  • Work shirt cut with a single piece placket
  • Rinsed once, no further shrinkage
  • Made in Japan
View sizing info
SKU: 13579 Categories: , Brand:

Size chart

The shirt is a regular fit and we recommend taking your usual size is most cases. Please check the measurements below and compare them to a shirt you already own to find the perfect fit.

Size Chest Length Shoulder Sleeve
Medium 21.25" 28" 17" 23.5"
Large 22" 28.75" 17.5" 24.25"
XL 23.25" 30" 18" 25.5"
XXL 24.5" 31" 18.75" 26"


Seuvas is a new brand that is dedicated to working with canvas and producing classic workwear-inspired pieces that they call “free-spirited clothes”. Each piece is cut and sewn in Kurashiki, Japan, a city that accounts for 70% of Japan’s canvas production, using vintage sewing machines. The canvas they use is made by Takeyari, a manufacturer that was established in 1888 and has been making canvas for over 130 years. For that extra special detail, many Seuvas pieces are finished with a porcelain button made from clay ore in Amakusa City, Kimamoto Prefecture. With their combination of tough canvas and careful sewing, each Seuvas piece is designed to be a canvas for its wearer and develop an individual character all of its own. Those That Know are proud to be the first European stockist of this exciting new brand.

Delivery & 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 Tracked 48 and International Tracked to send our orders in most cases. The shipping cost is calculated based on your location and the weight of your order. You can find out more about shipping costs on our shipping page. The average shipping times are:

  • UK – Delivery in 48 hours
  • Europe – Delivery in 3-5 working days
  • Rest of World – Delivery in 6-7 working days

We aim to ship all orders within 24 hours of receipt or on the next working day. Once your order has shipped, you will receive a tracking reference to your email address.


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].

Unless we have made a mistake with your order, we cannot accept returns of socks, magazines or books.

For more information about returns, see our returns page.