Journal
Equipment and Apparel
What the gear does, what it does not do, and how to choose.
Equipment and Apparel
Long sleeve or short sleeve
Neither ruleset decides it and the research does not either. What is left is a smaller question than the internet makes it, and it has an answer.
19 August 2026 · Guard Theory editorial · 5 sources
Equipment and Apparel
How a BJJ rash guard should fit
What the garment has to do while you are gripped, dragged and sat on, the one fit rule anybody wrote down, and five checks you can run in a changing room.
4 August 2026 · Guard Theory editorial · 7 sources
Equipment and Apparel
How to wash a rash guard
Most laundry advice for stretch knitwear is confident, unsourced and about a different fabric. Here is what has actually been measured, what the care label is really telling you, and what we could not find evidence for.
4 August 2026 · Guard Theory editorial · 9 sources