viviaBella hair specifics:Hair Weft: Double sewing and imported Japan glue in order to avoid shedding.Clips sewing: Hand Made Sewing by over 10 years experienced workers, stay tight on weft.Hair Process: Washing, Fumigating and Ironing, all Physical process without chemical material.Hair feature: 7 pieces (16 Clips): 2 x 1.5"weft; 2 x 4"weft; 2 x5.5"weft; 1 x 7.5" wide weft,.Advantages of human hair clip ins: Top Quality Virgin human hair, No shedding, No tangles, Durable, Reusable. Can be dyed,curled,straightened,washed as your own hair. It is flexible to use by your choice. Useful for both thin and thick hair by adjusting the pieces. viviaBella hair clip-ins are perfect for adding length or volume. Well Crafted Double Wefts Sewn With Quality Clips stitched on hairs, Secure & Comfortable to Wear.Note: Hair Measure: stretching the hair to be straight and then measure with ruler.Picture color: to ensure hair extension color match your own hair,please send us pictures taken in outdoor natural lights to us.Hair coloring: Light color hair can only be dyes to darker color.Return policy: For any Quality Problems,we provide 7 days easy return after we confirmation. For a full refund, please make sure the hair is not been used.Please contact us on Amazon if you have other problems.Customer Service:When you place an order, we will ship it and keep tracking it until it reaches you, We are here 24/7 to answer any questions.