Our no-heat hair rollers are made of quality Wooden material, which is durable, non-slip, and long-lasting, safe to use, and do no harm to your hair. Each hair roller has several vents for better saturation, helping you create beautiful hair styling like wavy hair, curly hair, fluffy hair, etc. HAIR ROLLERS | HAIR CURLERS| SPIRAL ROLLERS| No heat hair curling rollers