BJJ Gi Buying Guide — How to Choose the Right Brazilian Jiu-Jitsu Gi

Choosing the right BJJ gi can feel overwhelming with so many options available. This guide breaks down everything you need to know — weave type, weight, fit, sizing and which brands to consider — so you can make the right choice for your training.

BJJ Gi Weave Types

The weave refers to how the jacket fabric is constructed. It affects the weight, durability and feel of the gi.

Single Weave

The lightest and most affordable weave. Good for beginners and hot climates. Less durable than heavier weaves and can feel thin, but perfectly adequate for regular training.

Double Weave

Twice as thick as a single weave — very durable and difficult to grip. Heavier and warmer to train in. Less common in modern BJJ but still used by some practitioners who prefer a stiffer gi.

Pearl Weave

The most popular weave in modern BJJ. Offers a good balance of weight, durability and comfort. Lighter than a double weave but more durable than a single weave. The standard choice for most practitioners at all levels.

Gold Weave

A hybrid between single and double weave — lighter than a double weave but more durable than a single. Less common than pearl weave but still a solid choice.

Ripstop

A lightweight, fast-drying fabric used primarily for gi trousers, though some gi jackets use ripstop panels. Very popular for no-gi and competition use due to its light weight and quick drying properties.

BJJ Gi Weight

Gi weight is measured in GSM (grams per square metre). Lighter gis are better for competition (less weight on the scales) and hot weather training. Heavier gis are more durable for everyday training.

• Under 400gsm — Lightweight, ideal for competition and summer training
• 400–550gsm — Mid-weight, the most versatile choice for regular training
• 550gsm+ — Heavyweight, very durable but warm — better suited to cooler climates

IBJJF Approval — Do I Need It?

The International Brazilian Jiu-Jitsu Federation (IBJJF) has strict rules about gi specifications for competition — including colour (white, blue or black only), fit and construction. If you plan to compete in IBJJF-sanctioned events, you'll need an IBJJF-approved gi.

For club training and non-IBJJF competitions, approval isn't required. Most quality gis from reputable brands will meet IBJJF standards even if not officially listed.

BJJ Gi Colours

IBJJF rules permit white, blue and black gis for competition. For training, any colour is generally acceptable — check with your gym if unsure. White is the most traditional choice and the easiest to keep clean (bleach-safe).

How Should a BJJ Gi Fit?

A well-fitting BJJ gi should be snug but allow full range of movement. IBJJF rules specify minimum sleeve and trouser lengths — your gi should not be excessively baggy or short.

• Jacket: Sleeves should reach no more than 5cm from the wrist. The jacket should reach mid-thigh.
• Trousers: Should reach no more than 5cm above the ankle.
• Fit: Snug enough that your opponent can't easily grip excess fabric, but not so tight it restricts movement.

Important: Most BJJ gis will shrink slightly after the first wash. Many practitioners size up and wash in warm water to pre-shrink before competing. Always check the manufacturer's shrinkage guidance.

BJJ Gi Sizing

BJJ gis use a letter-based sizing system (A0–A6 for adults, M0–M4 for kids) rather than standard clothing sizes. Sizing varies between brands — always check the specific size chart for the gi you're buying.

• A0 — XS (under 60kg, under 160cm)
• A1 — S (60–70kg, 160–170cm)
• A2 — M (70–85kg, 170–180cm)
• A3 — L (85–95kg, 180–185cm)
• A4 — XL (95–110kg, 185–190cm)
• A5/A6 — XXL+ (110kg+)

Some brands also offer F (female) sizing for a more tailored cut. If you're between sizes, consider your body type — taller practitioners often size up for sleeve length.

Which BJJ Gi Brand Should I Choose?

Adidas

Adidas produce a well-regarded range of BJJ gis, including their popular Response series — a lightweight ripstop gi that's IBJJF compliant and competitively priced. A solid choice for beginners and regular training.

Fairtex

The Fairtex Mohom BJJ gi is handmade in Thailand using premium pearl weave fabric. Built to the same exacting standards as the rest of the Fairtex range — durable, well-constructed and competition-ready.

Gi vs No-Gi Training

BJJ can be trained with a gi (traditional uniform) or no-gi (shorts and rash guard). Most gyms offer both. Training in a gi develops grip-based techniques and a strong defensive game — many coaches recommend beginners start with gi training before transitioning to no-gi.

If you plan to train no-gi, you'll need rash guards and grappling shorts instead of a gi.

What Else Do I Need for BJJ?

• Belt — Usually included with your gi. BJJ uses a separate belt system to judo/karate.
• Rash guard — Worn under the gi to reduce mat burn and improve hygiene. Optional but recommended.
• Mouthguard — Essential for sparring (rolling).
• Ear guards — Recommended if you want to avoid cauliflower ear from regular grappling.
• Gym bag — A ventilated bag to air your gi between sessions is important for hygiene.

Summary — Choosing the Right BJJ Gi

• Beginners: Mid-weight pearl weave in white or blue — Adidas Response is a great starting point
• Regular training: 400–550gsm pearl weave from a reputable brand
• Competition: Lightweight IBJJF-approved gi — pre-shrink before your first competition
• Hot climate / summer: Lightweight ripstop or single weave

Browse our full range of BJJ gis at Budo Online — with free UK delivery on orders over £70.