3Doodler 3DS-ESST-E-E Start Essentials 3D Pen Set For Kids With Free Refill Filaments, Multi THE ONLY CHILD-SAFE 3D PEN: Designed with no hot parts completely safe for kids aged 8+. Pen nozzle and plastic can safely be touched with no burn risks. PERFECT FOR STEM LEARNING: As a tactile learning toy, the 3Doodler Start inspires creativity, design, planning, building and spatial understanding. 3D ART MADE EASY FOR KIDS: Plastic hardens rapidly allowing kids to literally draw in the air with only one speed and one temperature. NO RISK PURCHASE: 360 days FREE replacement policy and unrivaled 24-hour global customer service. COMPLETE 3D PEN KIT: Each box includes 3Doodler Start 3D Pen, 2 Mixed-color Packs of Eco-Plastic (48 Strands), Micro-USB Charger, Activity Guide + a ton of creative potential!