Nail Gel Kit: 7 Colors Poly Nail Extension Gel Kit includes 7*15g Poly Nail Gel, Mini Nail Lamp, Nail File, Nail Dust Brush Pen, etc. Flexible and portable manicure kits are available and easy to carry, allowing you to perform manicures anytime, anywhere, at home or on the go. Long-lasting: Our Nail Gel is formulated with innovative all non-toxic ingredients and plant extracts to give nails high stamina and long-lasting strength, cruelty-free, low odor and safe for natural nails. With proper application, lengthen your nails and flaunt them for over 21 daysEnjoy the fun of color changing: Feel the magic of four times the temperature change at your fingertips. The poly nail gel color changes based on the temperature of your nails You can tell from the description how it changes.