About this item Hair Roller Set: Great alternative to velcro, these rollers come in 42 pieces, all 7-inches with 6 thickness types. Perfect for curling short, medium, and long hair. No Damage to your Hair: These heatless hair curlers are safe to wear during sleep, and will help you achieve the curls that you desire with no heat damage to your hair. Easy to Use: Effortlessly create pretty curls at home with wet or dry hair. You can sleep or go about your daily tasks while wearing them. Wet hair & blowdryer yields instant curls. Rod Sizes: 7/8" 11/16" 5/8", 9/16" 1/2 "7 / 16". Using six different rod sizes your hair can be styled anyway from tight to wavy curls. Material: Soft and lightweight foam rollers designed to smoothly grip you hair without pulling on it and causing no damage to your hair. Flexibility: These hair rods can be easily molded into different shapes so you have the freedom and fluidity to style your hair however you want.