Bulk order? Contact us for discounts and personalisation services.

Handmade in George · Free engraving up to 120 × 80 mm

Your creativity,
our craftsmanship.

Full-grain leatherLocally sourced, aniline-dyed
100% hand-stitchedSaddle stitch that won't unravel
Free personalisationNames, icons or your own logo
Nationwide deliveryOr collect in George

Our collections

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New · Live engraving preview

See your engraving before we make it

Choose your piece and colour, type a name or message in one of our engraving fonts — or pick an icon — then drag it into place. What you see is what our laser burns into the leather.

Try it on the A5 Notebook
Personalised A5 leather notebook

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The meaning behind our name

The “sum of” or sigma symbol (Σ) lets mathematicians express the total of a sequence. For us it is the final expression — the result of thoughtful design and the hours invested in a single leather piece.

We craft from high-quality full-grain leather at our workshop in George, South Africa. Our products make exceptional personal and corporate gifts.

Our story

New from the workshop

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Brand partnership

Your logo, our leather

Corporate gifts, conference giveaways and wedding favours — engraved with your logo, with attractive discounts on bulk orders.

Start a corporate order