Specification: Name: 3D Printing Pen Pad Material: silicone Size: about 16.4*10.9 inch Color: blue Instructions for Use: 1) Simply use a 3D pen to draw the filaments into the basic lines and shapes in the grooves of the mat; the mat will not stick to the printed filaments, will not bend the mats, and can easily remove the filaments from the mat surface. It more easily supports 3D strokes and precision. 2) Supports all 3D Pen / 3D filaments: for example PLA filament refills, ABS filament refills; the design cushion is made of groves and can easily squeeze 3D printing materials. Packing List: 3D Printing Pen Geometry Pad * 1 Anti-scald Finger Cover * 2 (random color)