Table of Contents
- Why Getting Your BJJ Apparel Size Right Matters
- How to Measure for a BJJ Gi
- Understanding BJJ Gi Size Chart Standards
- BJJ Gi Fit Guide: What Proper Fit Looks Like
- No-Gi BJJ Clothing Size Guide
- Shrinkage, Fabric Care and Fit Over Time
- Making Your Final Size Decision
- Frequently Asked Questions
Last Updated: October 17, 2026
Why Getting Your BJJ Apparel Size Right Matters
Sizing matters more than most people realise with combat sports-inspired streetwear. Getting your BJJ apparel size right means the piece fits your body and looks intentional.
A good fit comes down to three things: your body measurements, how cuts and fabrics behave, and shrinkage. This guide covers each, whether you're buying everyday streetwear inspired by the martial arts lifestyle.
How to Measure for a BJJ Gi
The only reliable way to choose the right BJJ gi size is to measure yourself properly. Guessing based on your regular clothing size or height alone will leave you frustrated. You need four key measurements: chest, waist, sleeve length, and inseam.
Taking Chest and Waist Measurements
Grab a soft measuring tape and wear fitted clothing, since loose layers throw your numbers off.
Your waist goes around the narrowest part of your torso, typically just above your hip bones, again snug but not squeezed.
Measuring Sleeve and Pant Length
Sleeve length is where many people go wrong. Don't measure from your shoulder; measure from the centre of your back neck, across your shoulder, down to your wrist, with your arm relaxed at your side.
Pant length (inseam) is straightforward. Stand barefoot with your legs straight. Measure from your inner thigh, where your legs meet, down to your ankle bone.
Understanding BJJ Gi Size Chart Standards
Most gi manufacturers use a standard labelling system: A0, A1, A2, A3, A4 for adults, plus F (female) and youth sizes. The letter indicates the cut and the number the size within it. Brands interpret sizing slightly differently, but the system gives you a starting point.
Adult, Women's and Youth Sizing
Adult sizing ranges from A0 (smallest) to A4 (largest), and most people fall into A1 or A2. Women's cuts (F0-F3) have narrower shoulders, a tighter waist and a shorter torso, while youth sizes scale down proportionally.
These categories are about proportions, not overall size. An A1 isn't a "small" t-shirt; it's a specific cut. Someone 168cm with a 86cm chest might fit A0 or A1 depending on arm length and torso height, while someone 178cm with the same chest might need A1 or A2.
Classic, Slim and Husky Cuts
Many manufacturers offer cut variations. A classic cut suits typical athletic builds, a slim cut is narrower through the chest and waist with shorter sleeves and inseam, and a husky cut is wider and longer for larger frames or a looser fit.
Choose your cut based on body shape, not just measurements. Broad shoulders with a smaller waist may feel restrictive in a slim cut, while a stocky build may find a classic cut leaves excess fabric.
BJJ Gi Fit Guide: What Proper Fit Looks Like
A properly fitted gi should feel comfortable and allow full range of motion: not so loose that fabric bunches, not so tight that you feel restricted. The jacket should sit close without pulling, and the pants should move with your legs without sagging.
Sleeve Length and Pant Clearance
Your gi sleeves should end between your wrist and the base of your thumb when your arms hang naturally. Too long and they catch on your hands and look sloppy; too short and they expose your wrists and limit movement.
Pant legs should end at your ankle, covering the top of your foot without dragging.
Jacket and Pant Fit Markers
Beyond sleeve and hem length, check these specific fit points before you decide a gi is right:
- Shoulder seam placement: The seam where the sleeve meets the jacket body should sit at or just past the edge of your shoulder bone. If it sits well inside your shoulder, the jacket is too narrow; if it hangs past your shoulder, the jacket is too wide.
- Jacket skirt length: With the jacket closed, the bottom hem should cover your hips and upper thighs but not extend past mid-thigh. A jacket that stops above the hips will ride up during movement; one that reaches past mid-thigh will bunch when you sit.
- Chest and back room: With the jacket closed, you should be able to slide a flat hand under the lapel at the chest without straining the fabric. If you can fit a fist, the jacket is likely too large; if you can't slide a hand in, it's too tight.
Mobility and Comfort for Grappling
Move through basic positions, sitting cross-legged, standing in a fighting stance, reaching across your body, and you should feel unrestricted.
Trying a gi on in person beats ordering online because you can actually move in it. If you order online, check the return policy: a 30-day window is standard and gives you time to try it on and send it back if it doesn't work.
When the Jacket Fits but the Pants Don't (and Vice Versa)
A common problem is a gi that fits in one half but not the other. If the jacket fits but the pants are too tight through the thighs or too short:
- Check whether the brand sells jacket and pant sizes separately. Some manufacturers do, which lets you pair an A2 jacket with A3 pants.
- Look for a different cut within the same brand. A husky cut may give you more room through the hips and thighs without changing the jacket size.
- Consider a different brand's size chart. Sizing conventions vary, and one brand's A2 pant may be closer to another brand's A3 in the legs.
If the pants fit but the jacket is too tight across the shoulders or chest, apply the same logic in reverse: check for split sizing, try a wider cut, or compare measurements across brands. Don't simply size up the whole gi, which leaves you with pants that are too large.
No-Gi BJJ Clothing Size Guide
Not everyone trains in a gi. No-gi training, in rash guards, grappling shorts and spats, has different sizing considerations because the garments are form-fitting.
Sizing Rash Guards and Grappling Shorts
Rash guards should fit snugly without restricting your breathing or shoulder movement, and some compression is expected. Size based on your chest measurement and the manufacturer's fit guide: too loose defeats the purpose, too tight limits mobility.
Grappling shorts are sized like regular athletic shorts, based on waist measurement. They should sit at your natural waist without sagging and allow full leg freedom.
Fit Differences Between Gi and No-Gi
No-gi apparel is meant to be tight and form-fitting, while a gi jacket has more room for movement and layering.
A common mistake is ordering the same size in no-gi as you would in a gi. If you're an A1 in a gi, you might be a medium in a rash guard from the same brand.
Shrinkage, Fabric Care and Fit Over Time
Shrinkage depends on fabric composition and care. Air drying minimises it and machine drying accelerates it, so cold washing and air drying is safest for preserving the original fit. Check the care instructions and factor shrinkage into your sizing decision if you plan to machine dry.
Shrinkage by Fabric Type
Knowing what your gi is made from helps you predict how it will change:
- 100% cotton (single weave or double weave): These shrink the most, especially on the first few washes. Expect noticeable change in length and width if you machine dry. Cold wash and air dry to limit it.
- Cotton-polyester blends: These shrink less than pure cotton because the polyester content stabilises the fabric. They are a common choice for practitioners who want a gi that holds its fit.
- Pre-shrunk cotton: The manufacturer has already run the fabric through a shrinking process, so further shrinkage is reduced but not eliminated. You may still see a small amount of change after the first wash.
If you're between sizes and the gi is 100% cotton, size up slightly if you plan to machine dry. If it's a pre-shrunk blend and you plan to air dry, you can usually size to your measured dimensions.
Care Methods and Their Effect on Fit
How you wash and dry your apparel directly affects shrinkage:
- Cold wash, air dry: The gentlest option. Minimal shrinkage, and the garment holds its original dimensions. This is the best choice if the apparel fits well out of the box.
- Cold wash, tumble dry low: Moderate shrinkage. The heat and tumbling encourage the cotton to contract. Check the garment after each cycle rather than drying it fully in one go.
- Warm or hot wash, tumble dry: The most aggressive option. This will shrink the garment the most, and repeated hot washing can continue to shrink cotton over time. Use this only if you deliberately want to bring a slightly large garment down in size.
To deliberately shrink a slightly large garment, wash it in warm water and tumble dry on low, checking the fit after each cycle and stopping when it reaches the fit you want. Avoid high heat, which can shrink the garment unevenly and damage the fabric.
Sizing for Growth and Change
Fit also changes over time beyond shrinkage: beginners often gain or lose weight in their first year, and children grow out of gis quickly. A few practical rules:
- Adults: Size to your current measurements, not to a future goal weight. A gi that is too large now will be uncomfortable and unsafe to train in while you wait to grow into it.
- Children: Size for the current fit with a small allowance for growth, but not so much that the gi is baggy. A gi that is too large can be a tripping hazard and will not protect the way a properly fitted one does.
- Between sizes: If you are between sizes and the apparel is 100% cotton, consider sizing up if you plan to machine dry, or sizing down if you plan to air dry and prefer a snug fit.
Making Your Final Size Decision
Start with your measurements, then find the size chart for the specific brand and product.
Check the return policy: a 30-day window is standard and gives you time to try the item and send it back if it doesn't work.
For Violent Poetry's BJJ collection, like the BJJ Shoot Your Shot Tee or BJJ Ready To Roll Tee, measure your chest and compare it against the size guide. The BJJ Mindset Tee follows the same sizing standard, making it easy to find your fit across the collection.
| Measurement | What to Check | Why It Matters |
|---|---|---|
| Chest | Fullest part around your torso | Determines overall size (XS-2XL) |
| Waist | Narrowest part above hips | Confirms fit around midsection |
| Sleeve length | Neck to wrist across shoulder | Ensures sleeves end at right point |
| Inseam | Inner thigh to ankle | Prevents pants dragging or riding up |
| Fit preference | Snug vs. loose | Guides choice between cuts |
| Shrinkage plan | Air dry vs. machine dry | Affects long-term fit |
Choosing the right BJJ apparel size isn't complicated once you know your measurements and understand how cuts and fabrics behave.
Frequently Asked Questions
How do you measure yourself for a BJJ gi?
Measure your chest at the widest point while wearing a fitted shirt, keeping the tape horizontal. For waist, measure around your natural waist. Sleeve length is from the centre back neck down to your wrist with arm slightly bent. Pant length is from your hip bone down to your ankle. Write down all measurements in centimetres and compare them against the size chart before ordering. Most brands provide detailed measurement guides on their product pages.
What size BJJ apparel should I choose if I'm between sizes?
If your measurements fall between two sizes, consider your training style. For gi, choose the smaller size if you prioritise mobility and a closer fit, or the larger size if you prefer room to move and expect some shrinkage. For no-gi clothing like rash guards and grappling shorts, a snugger fit is generally preferred to prevent riding up during rolling. Check the brand's specific guidance, as sizing varies across manufacturers.
Do BJJ gis shrink after washing?
Most gis shrink slightly, especially on the first few washes. Pre-shrunk fabrics shrink less than untreated cotton. Air drying preserves fit better than machine drying, which can cause additional shrinkage. If you're unsure about shrinkage for a specific brand, air dry your gi until you're confident about the fit. Some practitioners intentionally size up slightly to account for expected shrinkage from their preferred washing method.
How should a BJJ gi fit for comfort and grappling?
Your gi jacket should sit snugly without restricting arm movement. Sleeves should end 5 centimetres above your wrist bone. Trousers should reach your ankle with a slight break at the top of your foot. You should be able to move through basic positions, guard, mount, side control, without the fabric pulling tight or riding up. Chest and waist should feel secure but allow deep breathing. A proper fit balances comfort with minimal excess fabric that opponents could grab.
What's the difference between no-gi BJJ clothing sizing and gi sizing?
No-gi apparel like rash guards and grappling shorts typically runs smaller and tighter than gi sizing because they're designed for a body-hugging fit. Rash guards should fit snugly to prevent riding up during rolling, while grappling shorts need enough room in the legs for movement but shouldn't be loose. Gi, by contrast, has more generous room built in. Always check the specific size chart for no-gi items, as they differ significantly from traditional gi measurements.
Should I size up when buying a BJJ gi?
Only size up if your measurements are very close to the top of a size range, or if you know the brand runs small. Oversizing creates excess fabric that opponents can grab and limits your mobility. Most practitioners find their true size by measuring accurately and comparing against the brand's chart. If you're concerned about shrinkage, air dry instead of sizing up, as this gives you better control over fit changes.
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