Where could i buy the big non - heating hair curlers the type they use in salons for my hair. ?

Hairdressing supplies warehouse!Where could i buy the big non - heating hair curlers the type they use in salons for my hair. ?
go to a sally beauty store and just look around and if you cant find which on ask the people who work there and will find you the perfect on. Where could i buy the big non - heating hair curlers the type they use in salons for my hair. ?
WalMart...Target...CVS....

becca