This example (#2454) uses a 15 bight pattern about 6 1/4" (158 mm) inside circumference and a light blue accent. Would be a size "small".
Available here 2454
The more common three part rope bracelets are examples of the odd number of part knots. These do not have the center overlap like the even part patterns. Instead they have the ridge formed by the crossing parts.
Available here 2453
Illustrated instructions can be bound in the Ashley Book of Knots (ABOK) page 239 - 240, pattern numbers 1342 and 1345
Available here 2455 in my Etsy shop
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