Easy to apply peel, stick and surf! Designed to protect your Stand Up Paddle (SUP) and big longboards with full thick (1"-2") and wide (6"-10") tails. For thinner (3/8"-1") and narrow (4"-6") tail shapes, the original Tail Guard is recommended. The Tail Guard functions as a soft "shock absorbing guard" that protects the tail of the surfboard and you from dings. The Jumbo Tail Guard is 18" long, 3/4" tall in the center, 5/8" tall at the ends, with the two side notches 9" apart. Will not affect board performance!