These no-heat hair curlers are not only effective, but are really cute to wear! You simply roll your hair into these curlers, like any other curler and sleep on them over night! These are made out of sponge, so they're comfortable to sleep on. Another way to get curls or loose waves, is to roll up your hair when it's slightly damp and to dry them with a hair dryer! I love using these curlers it's always exciting to unroll them to see your curls! Just a note, most curls that come out overnight are ringlet curls, so work that brush! These curlers are very popular in Pacific-Asia, so you can either order these online or find an Asian pacific beauty store.