Gi weave determines how a jacket handles grip-fighting, heat and repeated washing over its working life — a real specification decision for a distributor sourcing for competitors versus recreational students, not a cosmetic choice.
Weave types
- Single weave — basic over-one/under-one pattern, smooth and flat, lightest and cheapest, most breathable, shortest lifespan under heavy grip-fighting
- Double weave — doubled thread count woven as a double layer; very durable and grip-resistant, but heaviest, hottest and slowest to dry
- Gold weave — an older hybrid meant to combine single-weave lightness with double-weave durability; largely superseded because it shrinks more than modern alternatives
- Pearl weave — a refined modern weave with a distinctive textured surface, now the dominant commercial standard; balances durability, weight and breathability without gold weave's shrinkage
GSM ranges
Figures vary by source but converge roughly as: ultralight/single weave around 250–450 GSM, favoured for hot climates and frequent no-time-limit training, though it wears faster; mid-weight (often pearl weave) around 450–550 GSM, repeatedly cited as the practical balance of durability, comfort and competition performance; and heavyweight double weave or dense pearl/gold weave from roughly 600 up to 950–1100 GSM at the extreme durable end — very durable but hot, heavy and slow to dry between sessions.
Competition legality — verify the specific number before quoting it
IBJJF's own uniform page states the gi must be cotton or cotton-like woven fabric, and that fabric should not be so thick or hard that it impedes an opponent's grip — a functional/tactile standard, not a published numeric GSM threshold, at least as stated on that page directly. Third-party competition guides widely describe pearl weave as effectively mandatory for the jacket in adult and master divisions, with ripstop legal only for pants, never the jacket. Those claims are consistent across independent sources but weren't confirmed on IBJJF's own page — worth checking the current official rulebook PDF before stating an exact GSM figure as an official requirement rather than a common practical range.
Buyer segment mapping
- Competitor-focused distributor stock: pearl weave, roughly 450–550 GSM — durable enough for grip-heavy matches without being a liability on weight, IBJJF colour-compliant (white, royal blue or black)
- Recreational/casual student stock: single weave or lighter pearl weave (300–450 GSM) — adequate durability, cheaper, more comfortable for frequent casual training
- Double weave or heavy gold weave: niche demand — cold-climate schools or buyers explicitly prioritising maximum longevity over comfort
Official sources
These sources support the market or regulatory context. Supplier capability still requires product-level verification.
This guide provides general commercial education. Product-specific technical, legal and regulatory requirements should be confirmed for the selected product and destination market.