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By Pinnacle Martial Arts San Antonio
Try On the Gi Before You Buy One for Class You're browsing gis online the night before your first class, cart open, three tabs deep in size charts, and ...
You're browsing gis online the night before your first class, cart open, three tabs deep in size charts, and every brand measures differently. One chart says an A2 fits your height. Another says A2 is for someone six inches shorter. So here's the move: come to class in a t-shirt and shorts, borrow or try on a gi at the school first, then buy the one that actually fits your body. That's it. That's the whole thing you can save yourself a headache on.
Nobody tells you this part. Everyone talks about learning the armbar and surviving your first roll, but the gi itself trips up more new students than the technique does. A gi that's too big drags on the mat and swims on your frame. Too small and you can't lift your arms without the sleeves cutting into your wrists. Neither one is a disaster, but both are avoidable if you feel the fabric on before you commit.
Jiu jitsu gi sizing runs on an A-scale, A0 through A5 or so, and there is no universal standard behind it. An A2 from one manufacturer can fit noticeably different from an A2 from another. The chart is a starting guess based on your height and weight, and for a lot of people the guess is close. For plenty of others, especially anyone with long arms, a broad chest, or a build the two-variable chart just doesn't account for, it's off.
Then there's shrinkage. Most jiu jitsu gis are cotton, and cotton shrinks when you wash and dry it. A gi that fits perfectly out of the bag can pull up an inch or two in the sleeves after a few hot washes. Some brands pre-shrink, some don't, and the chart rarely spells out which. So you're not just guessing at your size, you're guessing at your size after it changes. That's a lot to bet on when you've never held the thing.
The IBJJF, the main competition body for the sport, actually publishes gi requirements for competition covering sleeve and pant length, fabric, and fit. You don't need a competition-legal gi to start training, but it tells you something: fit is specific enough that there are official rules about where the sleeve has to land on your wrist. If the sport measures it that closely, "close enough from a chart" isn't a great plan.
Slide a gi jacket on and the answer shows up fast. Cross your arms in front of you like you're bracing for a takedown. Reach both hands overhead. Grab your own opposite sleeve, the way you will constantly when you're gripping a partner. If the fabric fights you or the collar rides up your throat, that's your body telling you before class does.
The pants matter just as much and get ignored more. They should sit at your waist without a fight and end around your ankle, not halfway up your shin. You'll be squatting, sprawling, shooting your legs out, sitting back into guard. Pants that bind at the hips make all of that miserable, and you won't notice on a chart, only when you're actually moving.
Fabric weight is the other thing you can only judge by feel. A lightweight gi breathes better, which in a San Antonio summer is not a small consideration. Our July heat doesn't quit when you walk into a gym, and a heavy competition-weight gi holds warmth like a blanket. A lot of people starting out this time of year are happier in a lighter single-weave until they know what they prefer. You can't feel the difference between weaves in a product photo. You can in your hands.
We don't want your first class to hinge on whether an online order showed up on time or fit right. Come train in a t-shirt and athletic shorts for your trial. Seriously, that's all you need to get on the mat and find out if jiu jitsu is for you. Plenty of your early no-gi and fundamentals work doesn't require a gi at all.
When you're ready for one, we'll help you get it right. We'll look at your build, talk through how you move, and steer you toward a size and weight that fits you and this climate, not a chart's best guess. This is the part most schools leave you to figure out alone, and it's exactly the kind of thing our approach is built around. We'd rather spend ten minutes making sure your gear works than watch you fight a badly fitting gi for a month. That's not upselling you anything. It's making sure day one feels good enough that there's a day two.
It's also worth saying: a good gi lasts. Treat it right and it's with you for years of training, through belt changes and hundreds of rolls. That's the reason it's worth getting the fit correct up front instead of settling for whatever the algorithm recommended at midnight. You're buying a piece of gear you'll wear more than almost anything else you own.
Before you spend a dime online, come see us. We offer a free VIP tour and a trial class, no gi required, no pressure, and no assumption you'll love it before you've tried it. Roll around in shorts, get a feel for the mat and the room and the people, and if it clicks, we'll make sure the gi you eventually buy actually fits the person wearing it.
Whether you're driving in from Stone Oak, Alamo Ranch, or right off the North Side, the door's open and the welcome is real. Come try one on. Then buy the right one.