Quick Definition
Grappling shorts are pocketless, zipperless athletic shorts built for no-gi grappling sports such as Brazilian jiu-jitsu and submission wrestling. MMA fighters wear them too, paired with a rash guard to form the standard no-gi uniform.
What are grappling shorts?
Grappling shorts get their name from what they lack rather than what they have. No pockets. No zippers. No metal snaps or plastic clips. Anything that could catch a finger or scrape skin during a scramble is designed out from the start.
That stripped-down build exists for a practical reason. No-gi grappling puts hands and feet through tight spaces constantly, wrapped around limbs, jammed into guard passes, hooked under legs. A loose pocket or an exposed zipper pull is a snag hazard, and a caught finger can end a session early. Grappling shorts remove that risk before it happens.
They form one half of the standard no-gi uniform, worn under a fitted rash guard in place of the gi’s jacket and drawstring pants. Where a gi relies on heavy cotton for grip fighting, grappling shorts are cut from stretch synthetic fabric, usually a polyester-spandex blend, with an elastic or internal-drawstring waistband and no exposed hardware. The legs sit looser than a compression short but tighter than a casual gym short.
Grappling shorts vs. no-gi: what’s the difference?
The two terms get used almost interchangeably, but they describe different things. No-gi refers to a format of training and competition, wrestling and jiu-jitsu practiced without the traditional gi (kimono), relying on holds like underhooks and wrist control instead of fabric grips. Grappling shorts are the garment, one piece of the outfit that makes no-gi practical.
Searching “grappling shorts no gi” usually means one of two things: confirming that grappling shorts are the correct bottom for no-gi training, or looking for shorts built for no-gi’s specific demands, few snag points, four-way stretch, a waistband that survives a scramble. Both readings point to the same answer. Grappling shorts are the standard no-gi bottom, and outside of a handful of gi-optional drilling sessions, they are what shows up on a no-gi mat.
How grappling shorts are built
Most grappling shorts are cut from a polyester-spandex blend, commonly around 85 to 90 percent polyester and 10 to 15 percent spandex, woven with four-way stretch so the fabric moves in every direction a scramble demands. Fabric weight typically falls in the 180 to 200 grams-per-square-meter range, heavy enough to resist tearing under a grip but light enough not to trap heat.
Seams matter almost as much as the fabric itself. Flat-lock stitching sits close to the skin instead of raising a ridge, which cuts down on chafing during long rounds. The waistband is where most failures happen, so grappling shorts typically combine a wide elastic band with an internal drawstring, kept tucked inside the fabric so it cannot be grabbed or come loose mid-roll.
None of this includes a zipper or a button. Even the drawstring stays out of reach, sewn into the waistband rather than left to dangle.
Grappling shorts vs. other no-gi bottoms
No-gi grapplers cycle through several types of bottoms, and the names blur together outside the sport. Grappling shorts sit closest to fight shorts and board shorts in cut and purpose, a good grappling short and a good board short can be nearly identical. Spats work differently: full-leg coverage instead of a short leg, often layered under the rest. Each name still points to a slightly different emphasis, laid out below.
| Type | Fit | Hardware | Best for |
|---|---|---|---|
| Grappling shorts | Looser leg, snug waistband | None: no pockets, zippers, or buttons | No-gi BJJ, submission grappling, daily training |
| Fight shorts / MMA shorts | Similar cut, sometimes with leg slits | None; built for both standing and ground exchanges | MMA training that mixes striking with grappling |
| Board shorts | Looser leg, tie or elastic waist, less stretch | Competition versions are pocketless | The IBJJF’s official term for the required no-gi bottom |
| Spats / compression shorts | Full-leg or thigh-length, skin-tight | None | Extra coverage, added friction, or a lower-profile alternative to shorts |
IBJJF’s own rulebook uses “board shorts” as the technical term for the required no-gi bottom, which is why grappling shorts, fight shorts, and IBJJF-legal board shorts often look identical on a rack. Spats occupy a different role. Bare-leg grappling shorts give up some friction but move faster through scrambles and takedowns; spats add grip and skin coverage but slow that same movement down slightly. Some grapplers wear spats under their shorts for both, others skip the shorts to compete in spats alone where rules allow.
Competition rules for grappling shorts
Competition federations regulate grappling shorts closely, and the two most referenced rulesets, IBJJF and ADCC, take different approaches.
The IBJJF requires shorts, compression pants, or compression shorts in black, white, black-and-white, or the color matching the athlete’s belt rank. Pockets must be absent or stitched completely shut, and no buttons, zippers, exposed drawstrings, or metal or plastic pieces are allowed. Length must reach at least halfway down the thigh and no lower than the knee. A brief-type undergarment is mandatory underneath.
ADCC takes a lighter touch. Competitors can wear shorts in any color, and there is no belt-rank system tied to the uniform, since ADCC groups athletes by experience level rather than rank. The safety rule still applies: no zippers, pockets, or hardware that could injure an opponent. ADCC also bans grabbing an opponent’s shirt or shorts during a match, a scoring rule rather than a uniform rule.
Frequently Asked Questions
Are grappling shorts required for no-gi BJJ?
Most gyms require some form of grappling shorts, board shorts, or spats for no-gi classes, since gym shorts with pockets or zippers are a snag risk during live rolling.
What’s the difference between grappling shorts and fight shorts?
The terms overlap heavily. Fight shorts sometimes include leg slits built for kicking and standup movement, while shorts marketed purely as grappling shorts are built around ground work alone.
Can I wear regular gym shorts to a no-gi class?
Most academies discourage it. Pockets, zippers, and drawstring toggles can catch a finger or a toe during a scramble, which is the exact risk grappling shorts are designed to remove.
Do IBJJF rules allow any color of grappling shorts?
No. IBJJF requires black, white, black-and-white, or the solid color matching the athlete’s belt rank, with no pockets, zippers, or hardware, regardless of which color is chosen.
Are spats a substitute for grappling shorts?
In many gyms and some competitions, yes. Full-leg spats can replace shorts outright, though rules vary by organization and event, so it is worth checking before competing.
Sources
- IBJJF. “Uniform.” Accessed September 2026.
https://ibjjf.com/uniform - ADCC. “Support.” Accessed September 2026.
https://adcc-official.com/pages/support - Wikipedia. “Vale Tudo.” Accessed September 2026.
https://en.wikipedia.org/wiki/Vale_Tudo - Kingz. “No-Gi Jiu-Jitsu Explained: Rules, Gear & How It Differs.”
https://www.kingz.com/blogs/news/no-gi-bjj-explained-rules-gear-and-how-it-differs-from-gi-training - RVCA. “MMA & BJJ Fight Shorts Guide for Men & Women.”
https://rvca.com/blogs/expert-guides/choose-fight-shorts
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