Rules of Ultimate

3. Equipment

1. 3.1. Any flying disc acceptable to both captains may be used.
   Steinar's comment (unofficial!): Standard discs

   In practice, the standard disc worldwide is the 175g Discraft Ultra-Star. EUF events use Eurodisc, which is pretty similar. It is very common for game discs to have white as the main color.

2. 3.2. WFDF may maintain a list of approved discs recommended for use.
3. 3.3. Each player must wear a uniform that distinguishes their team.
4. 3.4. No player may wear items of clothing or equipment that reasonably could harm the wearer or other players, or impede an opponent's ability to play.
   Annotation: Harmful equipment should not be worn

   This includes wristwatches, bracelets, buckles and protruding jewellery. Fully metallic studs, long studs and studs with sharp edges are not allowed on footwear.

   Steinar's comment (unofficial!): Covered watches

   The rules are unclear when it comes to covered wristwatches (many players want to track their workouts); if using a soft armband over the watch, it should not be dangerous even if one inadvertently hits another player in the face and as such seems not to violate rule 3.4, but the previous annotation makes no such exception. In practice, I've never seen someone object to it, and this seems just an oversight.

   Annotation: Equipment that impedes ability to play

   This includes oversized items, long pieces of fabric etc. The types of gloves commonly worn by Ultimate players are allowed, but they must not in any way damage the disc or leave any residue on the disc.