Custom BJJ Gi Manufacturing: Complete Guide for Martial Arts Brands

The Brazilian Jiu-Jitsu market has grown dramatically over the past decade, and with it the demand for high-quality custom gis from both established brands and academy-specific labels. A well-made custom BJJ gi is one of the most demanding garments to manufacture — it needs to withstand extreme stress during training, comply with federation rules for competition, and yet look refined enough to carry a premium price point.

We have been manufacturing custom BJJ gis and martial arts uniforms for brands and academies around the world. The technical requirements are specific and non-negotiable. This guide covers everything you need to know to produce a gi that practitioners will love.

Understanding Gi Fabric: The Weave Makes Everything

The single most important specification in a custom BJJ gi is the fabric weave. This affects weight, durability, texture, shrinkage behavior, and how the gi performs during training. The four main weave types are:

**Single weave**

The lightest and most economical gi construction. A single layer of cotton fabric woven in a simple basket weave pattern. GSM typically falls between 350 and 450 GSM. Single weave gis are light and cool to train in, which makes them popular for hot climates and summer training. The tradeoff is durability — single weave gis wear out faster than heavier constructions and can feel thin in the grip areas. They are the entry-level option and often the choice for beginner or budget gis.

**Double weave**

Exactly what it sounds like — two layers of fabric construction, resulting in a much heavier and more durable gi. GSM typically 700 to 950 GSM. These gis are extremely robust and difficult for opponents to grip (the thick fabric does not bunch easily). The downside is weight — a double weave gi can weigh 2 kg or more, which is a consideration for competition weight categories, and they are very hot to train in.

**Gold weave**

The most popular competition gi weave. A hybrid construction that achieves a medium weight with good durability. GSM typically 450 to 550 GSM. Gold weave gis are lighter than double weave but significantly more durable than single weave. This is the sweet spot for most BJJ brands targeting serious practitioners. The slightly different weave pattern also creates a distinctive texture that is comfortable against the skin.

**Pearl weave**

Currently the most popular weave on the market. A textured weave construction with small pearl-like dots in the fabric surface. Extremely durable for its weight, good shrinkage behavior, and a clean aesthetic. GSM typically 450 to 550 GSM. If you are launching a competition-focused gi, pearl weave is the default recommendation.

**Ripstop**

Originating in the military, ripstop is a reinforced weave with a grid pattern of extra-thick threads that prevent tears from spreading. Very popular for lightweight no-gi shorts and pants, and increasingly used in lightweight gi pants. Less common for gi jackets but used for ultra-lightweight travel gis.

Collar Construction: The Most Stressed Part of the Gi

The collar is the most heavily gripped area of a BJJ gi and the most technically demanding part to manufacture. A poorly constructed collar will stretch, sag, and lose its shape after minimal training. A well-constructed collar maintains its rigidity for thousands of rounds.

BJJ gi collars are typically made from a combination of materials: an outer fabric that matches the gi body, an inner foam or rubber core for rigidity, and layers of inner lining fabric. The layers are quilted together with dense stitching that prevents delamination under repeated gripping stress.

Collars are categorized by their core material:

EVA foam core: The most common. Relatively firm, good durability, standard across most production gis. EVA comes in different densities — higher density means a stiffer, harder-to-grip collar.

Rubber core: Used in some premium gis for its superior grip resistance. Heavier than foam, extremely durable, and almost impossible to collapse during gripping. More expensive to manufacture.

Textile (no foam) collars: Some ultralight competition gis use a collar made purely of tightly woven textile without a foam core. Very light, good for weight-cutting, but less durable and easier for opponents to grip.

Specify your collar type, core material density, and collar height in your tech pack. IBJJF competition rules specify maximum collar thickness — typically 1.3 cm — so if you are targeting competition practitioners, make sure your collar spec is compliant.

Jacket Construction Details

Beyond the collar and main fabric, several other jacket construction details affect quality and durability.

Reinforcement points: Anywhere that experiences repeated stress — armpits, collar attachment points, cuff edges — should be reinforced with bar tacks or additional stitching layers. Skipping this leads to early failures at these stress points.

Skirt length: The bottom of the gi jacket has rules in competition (IBJJF requires the jacket to reach no lower than the competitor's thighs when arms are raised). Most brands produce gis with a skirt that falls 10 to 15 cm below the belt line in a natural standing position.

Sleeve opening: Competition rules also specify sleeve opening size. The sleeve should not be so wide that a full hand cannot be inserted when the arm is extended and the sleeve is pulled back. Specify this dimension in your spec sheet.

Belt loops: Whether to include side belt loops on the jacket is a brand decision — some practitioners prefer them for keeping the belt in place, others find them unnecessary.

Gi Pants Construction

Gi pants take a different kind of stress than the jacket — pulling from grips on the ankles and knees, repeated dropping to the mat, pivoting on the knee area.

Pant fabric: Can be the same weave fabric as the jacket, or a ripstop fabric for a lighter, more flexible pant. Ripstop pants paired with a pearl weave jacket is a popular combination for medium-weight gis.

Knee reinforcement: Additional layers of fabric stitched over the knee area substantially extend pant life. Either the same gi fabric or a separate reinforcement patch (often a different color for visual detail) works well.

Waistband: A wide, strong waistband with a drawstring. The drawstring is always woven cord (cotton or synthetic) — never flat ribbon, which slides through and can loosen. Specify draw cord material, width, and aglet type.

Ankle opening: Can be straight hem or with a small side slit for ease of movement. Some brands add a subtle ribbed cuff at the ankle for a fitted look.

Branding and Customization for BJJ Gi Brands

BJJ gis have specific norms around branding placement that experienced practitioners expect. The primary branding locations are:

Custom patches (woven or embroidered) sewn onto the gi are the most common and respected branding method in the BJJ community. Sublimation printing directly onto gi fabric is less common for the jacket (the weave texture interferes with print quality) but can work well for interior labels or lighter-weight pant fabric.

Academy gis often include additional custom patches: academy logo, instructor names, school rank information. We can accommodate fully custom woven patch production as part of a gi order.

IBJJF Compliance and Competition Readiness

If you are targeting competition practitioners, your gi needs to comply with IBJJF rules. Key requirements include: white, blue, or black color only (no mixed colors); specific collar dimensions; specific sleeve and pant length requirements; no excessive patches or logos that interfere with gripping; and a general "standard gi" construction without unconventional design elements.

I recommend downloading the current IBJJF gi rules and reviewing them carefully before finalizing your spec. Rules do change occasionally, so verify with the current version.

Ready to develop your custom BJJ gi line? Browse our martial arts collection and then get a free quote with your specifications. We start at 50 pieces and respond within 24 hours — and we have the experience to help you nail every technical detail.