the halo hair extension with wire,lighter and more comfortable without clips ,and really easier to apply and remove without any extra help in a few minutes. Material:100% Synthetic Japan High Temperature Fiber(Heat Resistance: 300℉-350℉ or 150-180℃ ) ;Length: About 12'' 14" 16" 18"(when it curl );Weight: About 3.5-4.2oz;Width: Approx 11";Colors tip :Color may vary by monitor,select the similar color based on your tail,it will look more naturally.Go a shade darker for a highlighted effect,a shade lighter for an ombre look ,colorful color for bright highlight,Either way, you can't go wrong! Product dimensions ‏ : ‎ 35.56 x 20.32 x 2.54 cm; 68 Grams