Mahjong by SI — Mahjong Plaza

Category: Equipment · Printed-to-order mahjong mats (neoprene + faux leather; custom builder)
Also called: Mahjong by SI™; mahjongbysi.com; SI Signature™ Faux Leather mats; Mahjong by SI + Signs by SI
Last checked: 2026-10-07

What it is

Mahjong by SI is a first-party mahjong mat maker based in Atlanta, Georgia: founder Stacie Ivers Francombe prints every mat to order through her print and fabrication company, Signs by SI, and sells hundreds of in-house and artist-collaboration designs on its own shop. Mats come in natural-rubber neoprene (20”, 31.5”, 33.5”) and SI Signature™ faux leather (20” travel, 33” square, 33” scalloped, 34” round). There is also a custom mat builder for your own artwork. It sells mats, not tiles or racks.

Who it’s for

American Mah Jongg players, clubs, and teachers who want a table mat to match their tiles: a travel mat, an oversized square, a round or scalloped faux-leather mat, or a one-off custom mat with a club logo, monogram, or photo. Existing Equipment listings on disk are mostly tile-set shops (Luxe, Mahjong Co., Mah Jongg Direct, American Mahjong Shop, Amahj Line, OMG Mahj, The Mahjong Line, Oh My Mahjong, Bespoke, Southern Sparrow, Modern Mahjong, etc.), plus Tuesday’s Four Woods rack maker. This is the first listing whose main product is mats.

Why it’s listed

The plaza needs an equipment pick that differs in kind from both the run of 160-tile set shops and Tuesday’s Four Woods (hardwood racks, Lafayette LA). Mahjong by SI is a mat specialist with published prices, a custom builder, and Georgia maker geography.

Homepage (https://www.mahjongbysi.com/) returned 200 on 2026-10-07 under “Mahjong by SI | Mahjong Mats Printed in the USA.” Banner: “HUNDREDS OF DESIGNS • SUPPORTING LOCAL & GLOBAL ARTISTS • PRINTED IN THE USA.” The shop menu sorts by color, style (Florals, Coastal, Classics, Chinoiserie, Minimal, Bold, Kids), size (Travel 20” x 20”, 31” x 31”, 33” x 33”, Round, Scallop), material (Smooth Neoprene, Leatherette), artist collaborations (e.g., Catalina Estrada, Anna Sokol, Alana Fay Art, Jen Jones, Watercolors by Aimee), and holidays. A “Mahjong Monday Drop” new-arrivals strip showed fall and Halloween mats at $50.00 and $70.00. Footer: © 2026 Mahjong by SI.
About (https://www.mahjongbysi.com/pages/about) returned 200. The founder writes that she owns Signs by SI, “a full-service print and fabrication company based in Atlanta,” and that “for the past five years” the company has been printing custom mahjong mats behind the scenes, testing materials and color. Designs come from an in-house designer and collaborations with independent artists. Her husband and three kids work in the business. Signed “Stacie Ivers Francombe | Founder, Mahjong by SI + Signs by SI.”
FAQ (https://www.mahjongbysi.com/pages/faq) returned 200:
- Natural Rubber Mats: 3mm natural-rubber base, smooth shiny fabric top, stitched edge, in 20”, 31.5” and 33.5”. The page warns that the backing is derived from natural rubber (latex).
- SI Signature™ Faux Leather Mats: studio-printed, in 34” round, 33” scalloped, 33” square and 20” travel.
- The mats use an “upgraded 3mm construction.”
- “All mats are printed crafted to order in our U.S. facility.” Hand washing is recommended for neoprene.
- Custom options: personalize an existing design, or start from a blank mat in the Custom Mat Builder.
- “most orders are final sale.”
Example product pages returned 200 with these prices on the check date:
- Above the Clouds (https://www.mahjongbysi.com/products/above-the-clouds-mahjong-mat): neoprene 20” $50, 31” $80, 33” $90; faux leather 33” $130.
- Aleteo (https://www.mahjongbysi.com/products/aleteo-mahjong-mat): neoprene 20” $75, 31” $110, 33” $120; faux leather 33” $150.
- Custom Mahjong Mat Builder (https://www.mahjongbysi.com/products/custom-mahjong-mat-builder-design-your-own): 31” neoprene $115, 33” neoprene $125, 33” faux leather $175. You upload a finished PNG (Canva suggested), and a design fee is available if you want the team to design it for you.
Build Your Own Mat (https://www.mahjongbysi.com/pages/build-your-own-mat) returned 200: upload 300 DPI PNG artwork. File sizes are 20.25” x 20.25” (20” mat), 31.80” x 31.80” (31.5”) and 33.80” x 33.80” (33.5”), with about 0.25” bleed.
Tile & Mat Matcher (https://www.mahjongbysi.com/pages/find-a-mahjong-mat-for-your-mahjong-tiles) returned 200: upload a tile photo or paste a tile link, pick tile and rack colors, and get suggested mats.
Shipping policy (https://www.mahjongbysi.com/pages/shipping-policy) returned 200: items are made to order and production times vary. Orders ship from the U.S. facility with standard and expedited options at checkout where available. Report damage within 5 days of delivery.
Returns + Refunds (https://www.mahjongbysi.com/pages/returns-refunds) returned 200:
- No standard returns for change of mind.
- A discretionary 5-calendar-day return exception carries a $25 restocking fee, and the buyer pays return shipping.
- Damaged, defective or incorrect orders: contact the shop within 7 calendar days with photos.
Contact (https://www.mahjongbysi.com/pages/contact) returned 200: customer service 404-955-8392. “Private, appointment-only shopping experiences at our Atlanta studio” for in-stock mats and studio specials.
Shop Local (https://www.mahjongbysi.com/pages/shop-local) returned 200: lists independent U.S. retail partners (e.g., in AL, CA, CO, FL).

Production lead times are not stated as a number on the pages checked (“timelines vary” and are confirmed after review). Street address of the Atlanta studio is not printed on the contact page (appointment booking only). The FAQ says to report damage within 5 days, while the Returns page says 7 calendar days for damaged, defective or incorrect orders. Confirm with the shop before relying on either window.

Official URL

Official shop: https://www.mahjongbysi.com/

Custom Mat Builder: https://www.mahjongbysi.com/products/custom-mahjong-mat-builder-design-your-own

FAQ: https://www.mahjongbysi.com/pages/faq

Shipping policy: https://www.mahjongbysi.com/pages/shipping-policy

Returns + Refunds: https://www.mahjongbysi.com/pages/returns-refunds

About: https://www.mahjongbysi.com/pages/about

Contact: https://www.mahjongbysi.com/pages/contact

Location

Atlanta, Georgia (studio and print facility of Signs by SI, per the About and Contact pages). The brand sells online and ships from its U.S. facility. In-person shopping is by private appointment at the Atlanta studio only; there is no walk-in storefront. Its mats are also sold through independent retailers listed on the Shop Local page.

Notes

Mats only (neoprene and faux leather, standard, travel, round, scalloped, custom). Not a tile-set or rack shop, so pair it with any set already listed.
First-party maker shop on its own domain, not Amazon, not a multi-brand reseller. No affiliate links were copied. The site also hosts a teacher directory and wholesale program, which this listing doesn’t cover.
Neoprene mats have a natural-rubber (latex) backing per the FAQ.
Not affiliated with Mahjong Plaza.

FAQ

Q: What sizes and materials do Mahjong by SI mats come in?
A: On 2026-10-07 the FAQ listed natural-rubber neoprene mats in 20”, 31.5” and 33.5” and SI Signature™ faux leather mats in 20” travel, 33” square, 33” scalloped and 34” round, all with an upgraded 3mm construction.

Q: How much does a mat cost?
A: Prices vary by design and size. For example, the Above the Clouds mat was $50 (20” neoprene) to $130 (33” faux leather). The Custom Mat Builder was $115–$175 depending on size and material.

Q: Can I put my own design or club logo on a mat?
A: Yes. You can personalize an existing design with a name, monogram, logo or text, or upload your own full artwork (300 DPI PNG) in the Custom Mat Builder. The team reviews artwork before production.

Q: Can I return a mat?
A: Mats are printed to order, so most sales are final. The Returns page allows a discretionary return exception within 5 calendar days of delivery with a $25 restocking fee, with return shipping paid by the buyer. Damaged or incorrect orders should be reported promptly with photos.