Contact us
Have a question before ordering? Contact us — we reply the same day on weekdays. If your question is about sizing, Gi weight, or competition approval, you’ll probably find the answer in our guides right away.
The answer may already be in our guides.
THE #1 QUESTION
What size should I get?
The height and weight chart, actual garment measurements, women’s fits, and what to do if you’re between two sizes.
MATERIAL
380, 420 or 450 GSM?
How fabric weight affects training and the scale, plus the differences between Pearl Weave, Ripstop, and Canvas.
COMPETITION
Will my Gi pass inspection?
Allowed fabric weights, collar and sleeve measurements, patch placement, and approved colors for IBJJF competition.
AFTER PURCHASE
How do I wash my Gi without damaging it?
Washing temperature, drying, stubborn odors, and shrinkage. The best practices to keep your Gi in great condition for years.
All our guides are available on the ATHOM Guides page.
Contact Us
For sizing advice, send us your height in centimeters, your weight, and the model you’re interested in. With these three details, we can give you the right recommendation straight away, without any back-and-forth.
By email: contact@athletesonthemat.com
Or via the form below.
For an existing order, please include your order number in your message. This saves us from having to ask for it and cuts the processing time in half.
Our Most Frequently Asked Questions
I’m between two sizes. Which one should I choose?
As a general rule, choose the smaller size if you have a stockier build, and the larger size if you have a leaner build. Each product page provides the actual garment measurements, and our size guide covers specific cases in more detail. If you’re still unsure, send us your height and weight.
Are your Gis IBJJF-approved?
IBJJF approval is clearly indicated for each model on every product page, including when a Gi is not approved. Competition-approved models are grouped in our IBJJF Gis category. You can find full details of the official requirements in our IBJJF Rules Guide.
What GSM should I choose as a beginner?
Between 400 and 450 GSM in Pearl Weave. It’s the most versatile choice for your first year of training. Our Gi Weight Guide explains why, and what changes with lighter or heavier fabrics.
Will the Gi shrink when washed?
Our cotton fabrics are pre-shrunk, so shrinkage should remain minimal during the first few washes. Wash cold, air dry, and never tumble dry. You’ll find full care instructions in our Gi Care Guide.
I’m looking to equip my club. Do you offer special rates?
Yes, we offer special rates for larger orders, with the option to add your club’s patches. Contact us with your club name, the number of members you’d like to equip, and their approximate sizes.
Shop Now
BJJ Gis
380 to 450 GSM Pearl Weave jackets in pre-shrunk cotton. Sizes A0 to A4, plus women’s fits.
IBJJF-Approved Gis
Competition-approved models, available in all three authorized colors.
Discover the latest releases and brand news on the ATHOM Blog.