Are ab rollers/wheels legit

[IHATEINDIANS]

Thinking of buying one I've heard some good things but not sure if it's cope or not

Getting bored of planks only

 

[160cmcurry]

not really necessary, straight leg raises usually work the core enough. obviously gotta be flexing your core throughout the entirety of it instead of cheating with your hip flexors

 

[Deleted member 142050]

I never figured out proper form