Sizes :
- Small - 15" x 15" square = 21" diagonal
- Medium - 18" x 18" square = 25" diagonal
- Large - 21" x 21" square = 29" diagonal
- X-Large - 24" x 24" square = 33" diagonal
NOTE: Always give yourself a little wiggle room in your measurements + a few inches on each end for the knot!