SAFE MATERIAL: Made from plant-based starch materials, this PLA filament is strong, flexible, and less prone to breakage. It is biodegradable, environmentally friendly, non-toxic, odorless, and bubble-free, making it safe for both children and adults. EXCELLENT 3D PRINTING EFFECT: The filament is smooth and glossy, tangle-free during printing, and easy to shape. Printed objects feature vibrant colors and excellent visual results. This set includes 20 popular colors, ideal for creating 3D art projects. STRONG COMPATIBILITY: Compatible with most 1.75mm 3D pens and 3D printers (dimensional accuracy +/- 0.05mm). The PLA filament prints at a temperature range of 320F to 392F, enabling quick and stable extrusion without cracking, warping, or clogging. 20 UNIQUE COLORS: The set includes 17 solid colors and 3 fluorescent colors, offering a wide range of creative possibilities for fun and unique designs. ADDITIONAL ACCESSORIES: The kit includes 2 silicone finger guards, a drawing guide, and 1 heat-resistant mat to assist beginners. A great gift for kids interested in 3D printing, ideal for birthdays, Easter, Children's Day, Christmas, or creative DIY craft activities.