Our BJJ gi guides
Choosing a Brazilian jiu-jitsu gi means answering four questions in order: which size, which fabric density, which constraints if you compete, and how to make it last. Our BJJ gi guides deal with each of these questions separately, with the figures and the sources. They are written by a brand that makes gis, not by an affiliate site.
Where to start: if you are buying your first gi, read the size guide then the fabric weight guide. If you are preparing for a competition, go straight to the IBJJF rules, then come back to fabric weight for the question of weight on the scale.
Choosing your gi
BEFORE YOU BUY
BJJ gi size chart
Sizes A0 to A6 match no ordinary clothing size. Real garment measurements, women’s cuts, and what to do when you fall between two sizes.
UNDERSTAND
Fabric weight and weave: GSM, pearl weave, ripstop
What GSM really measures, the difference between pearl, gold, diamond and double weave, and which density to choose for your training rhythm.
COMPETITION
IBJJF rules: what your gi has to meet
Permitted fabric weights, fabric construction, collar and sleeve measurements, patch placement, allowed colours. The detail of the official manual, in plain English.
MAKE IT LAST
Washing and caring for your gi
Temperature, drying, stubborn smells, shrinkage. The habits that take a gi from two to five years on the mat.
Moving on to the gear
Once the theory is settled, our gis are sorted by fabric weight and by approval. Models allowed in competition carry the IBJJF label on their product page, and every product page shows the weight of the gi size by size, the figure competitors look for before a weigh-in.
All our BJJ gis
Jackets from 380 to 450 GSM, pearl weave, pre-shrunk cotton. Sizes A0 to A4 and women’s cuts F1 to F4.
IBJJF approved gis
The selection of models allowed in official competition, in the three permitted colours.
Rash guards and no-gi
For training without a gi: rash guards, grappling shorts and related gear.
A question that is not covered here?
These guides grow month after month. Other subjects are in preparation: the beginner’s first gi, women’s cuts, managing weight for competition, choosing a rash guard and the service life of a gi. Shorter articles and brand news are on the ATHOM blog.
If you are looking for a specific answer before ordering, in particular about a size, write to us with your height and your weight. We reply the same day.