About the Product: 1.the revolutionary new alternative hair extension that can offer you instant transformation to thicker, longer hair with the aid of a transparent miracle wire which is undetectable hidden under your own hair. 2. Unlike the traditional hair extensions, which are attached to your own strands of hair, the new hair extension comfortably attaches Itself around your head by a transparent miracle wire which is undetectable hidden under your own hair. 3.Quite simple and easy, it takes only minutes to apply and remove: Simply place the flip in wire on your head, pull your own . of the adjustable transparent wire, the flip in can fit any head shape or size perfectlyhair through over the wire, you will find it rests perfectly on your head and blends naturally with your own hair. with the aid of the adjustable transparent wire, the flip in can fit any head shape or size perfectly Specs: Materials: 100 Japan High Resistant Synthetic Fiber(can be ironed between 300 H-350 H) Weight:about 4.3-4.9oz Length: 20inch There are Multi-color For choosing, which are guaranteed to blend with your own natural or color treated hair color. Our colors are multi-faceted and will work with various shades, ash, golden or beige. Go a shade darker for a highlighted effect or a shade lighter for an ombre look. Either way, you can't go wrong! See moreAfter Sales : Offers the RETURN or EXCHANGE Service.If Have Other Problems Please Feel Free to Contact Us and We will Solve Them for You Within 24 hours. Unlike yourself hair,the hair extension may get tangled without nutrition,use detangle spray, here is link http: a.co 7AzhZ8Q or get a spray bottle and put some conditioner in it, then fill it up with water.if no conditioner,just spray some water,It will make the hair extensions not very dry and prevent getting tangled in some extent. How to Apply the hair extension and adjust the size:Please click 7th Picture in any product,a video include adjust size,apply the hair extension,and more other details. Material:100 Synthetic Japan High Temperature Fiber(Heat Resistance: 300-350or 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!. the invisible wire hair extension,lighter and more comfortable without clips ,and really easier to apply and remove without any extra help in a few minutes.