PATENT PENDING FlexRoller™ Curb Straps  TURNAROUND TIME IS 10-14 DAYS.   Boca Bungee Curb Straps offer more give to a horse that is very sensitive from curb pressure.   It is also great for 2 year olds transitioning to a curb strap for the first time.   *when choosing “Designer Elite” make sure to add which colors you’d like to mix and match with the first color you choose.* Measurements:   Small: Suitable for bits with a shank length of 4.5 inches or less and a purchase under 1.5 inches. Standard (Most Popular): Designed for bits with a shank length between 5.0 and 7.5 inches, paired with a purchase measuring 1.5 to 2.5 inches. Large: Ideal for bits with a shank length of 8.0 inches or more and a purchase exceeding 2.5 inches.       If choosing a large curb modification, please do the following: •Measure your current curb chain at the length that it currently fits on your horse with the longer shank. •Type the measurement (in inches) in the notes before checkout.    NOTE: if you have a hackamore or combo bit with a short purchase, choose our “standard” size!