use fine point retractable marker for easy, one-handed operation. No cap to remove or lose. The safety seal valve design provides a superior seal, preventing the marker from leaking and drying out. Quick-drying ink is fade-resistant and water-resistant. Quick-drying, permanent ink marks on most hard-to-mark surfaces. Certified ap nontoxic. Quick-drying ink/water resistant/fade resistant/non-toxic. this product arrives to most customers in 2-3 business days.