In one sentence, describe what the following article is about:

Foam rollers are good for many types of hair, but they are particularly good for fragile hair as they are unlikely to snag or damage it. Select rollers according to the size of curls desired. The smaller the roller, the tighter the curl. Larger rollers create soft, gentle movement in the hair. You need at least shoulder-length hair to use larger rollers. You should be able to you're your hair around the roller at least 1 ½ times. Large rollers may not work well for people with very fine hair, as they can get too heavy and fall out. You may need to experiment to find what's right for your hair.

Summary:
Select your rollers.