Track and Field High school questions on attire!?

Hello, I am about to enter the track and field season and i have some questions on what I can and not wear for my races. Am i allowed to wear these on both arms.... http://store.nike.com/us/en_us/?sitesrc=uslp&l=shop,search,searchList-victory#l=shop,pdp,ctr-inline/cid-1/pid-323024 also am i able to wear this... http://store.nike.com/us/en_us/?sitesrc=uslp&l=shop,search,searchList-victory#l=shop,pdp,ctr-inline/cid-1/pid-158910/pgid-158912 and lastly this... http://store.nike.com/us/en_us/?sitesrc=uslp&l=shop,search,searchList-victory#l=shop,pdp,ctr-inline/cid-1/pid-362046 K THANKS SO MUCH!!!!