1). It is made of 100% Chinese Human Hair and 100% Remi Human Hair with AAA Grade quality2) Style: V shape, U shape, I shape, Flat shape and Easy Ring hair3) Weight: 0.4g/strand, 0.5g/strand, 0.75g/strand 1.0g/strand and another weight per each strand according to your requirements.4) Package: 25strands/package, 50strands/package, 100strands/package, 200strands/package according to your requirement5) Color Categories:Dark color: #1, #1B, #2,#3, #4, #6, #8,#9 #10,#12,#33, #99, #99JLight Color: #14,#16, #17,#18,#21, #22, #24, #27, #30,#32,#33, #144, #118, #130, #350, #530, #613, #Blue, #Pink, #Purple, #Red, #Yellow, #Orange, #Violet, #Green, #BurgundyAnd all kinds of Side by Side color(F color), Piano color(P Color), Two Tone color(T color), Mix color according to your requirements.We also could fulfill your order according to your own color ring6) Any size is available from your requirment.7) Fast delivery and Best service