air erasable pen, also called auto-vanishing marker/disappearing ink pen/vanishing pen, markings can disappear spontaneously in 1-14 days. the disappearing time mainly depends on different materials of the fabric and surroundings such as temperature, humidity and air circulation. usually violet keeps for 2-14days, pink for 1-7days and white for 1-4days. also writings can be removed completely & immediately by plain water, ironing or kearing erasers! three colors are available, violet & pink for light color materials, and white marker for dark ones. three different nib sizes for choice: standard nib—1.00mm, and fine ones--0.5mm/0.8mm.other sizes can be offered by order production! ink is nontoxic, and conforms to astmf963 and en71part3. package quantity:12/240/2880pcs box size:53*32.5*45cm suttle weight: 22.5kg gross weight: 23.5kg.