Description Brand: VivienHair Material: 100% Remy Human HairColor: #1b/silver/1b; #1b Off Black Fading to #silver and #1b Off Black.Weight:14"-22";50/100pack; We highly recommend you buy 100g-150g to make thicker hair.Texture: Silky and Straight. It's normal to appear natural wave after washing. What is Micro Loop Hair Extension? The use of micro rings for long-term attachment is not easy to detect. Feel soft, covert, and natural after using. Easy to apply and take off with professional remover. How to Apply Micro Loop? Tools Required NO Glue NO Heat Some Advice for Beginners Differences Between 5 Types of Pre-Bonded Hair Type Method Reusability Features Suitable Hair Types UsageTime I Tip Hot Fusions √ Super Solid Fine Hair 12 Weeks U Tip Hot Fusions √ Super Keratin BOTH 12 Weeks Nano Ring Tools Required √ Super Fine Fine Hair 12 Weeks Micro Loop Tools Required √ Doesn't require heat or glue Thick Hair 12 Weeks Flat Tip Hot Fusions √ 360-degree movement Fine Hair 12 Weeks