In general, participants should wear body-fitted clothing that provides rich visual features and allows the different parts of the body to be discerned from each other.

Acceptable clothing can include jeans, joggers, tights, shorts, t-shirts, sweaters, tank tops, etc., and can include casual or athletic attire. Skin-tight clothing is also acceptable, but not required. While these are guidelines only, some factors to consider when selecting or controlling participant attire include:
- Color (does the color eliminate visual richness or features?)
- Visibility of anatomical features (e.g. can you see the kneecap?)
- Visual richness (e.g. is there creasing or folding around the joints?)
- Contrast with background (e.g. are they wearing all black against an all black background?)
- Participant comfort (e.g. will the movement be inhibited by the attire?)

For more information, you can read our blog post on participant attire.