The change of unicorn whip 9 is less than 15, and unicorn whip -7 is changed. Kirin whip is a kind of fitness equipment. The difference between unicorn whip 9 and unicorn whip 15 is that unicorn whip 9 is less than unicorn whip -7, which consumes a lot of calories and burns fat at a very high speed. After a week or a few weeks, you can obviously see the effect of slimming and fitness.