Name: Color whiteboard pen (floating pen)
Material: Plastic
Single size: No. 01: Small 10.3*1cm; No. 02: Large 12.2*1.2cm
Packing: 8 colors /12 colors
Weight of a set: a set of thin nibs weighs 52g, and a set of thick nibs weighs 65g
techniques used:
1. Prepare a basin of cold water, do not use hot water! ! !
2. A dry spoon, don't stick to the water! ! ! (must be a ceramic spoon, iron spoons cannot be used; mirrors are fine too)
3. Draw the pattern you like, wait for a while after painting, and wait for the painting to dry! 
4. Slow down when you put it in the water, shake it up and down gently, and let the pattern float