BIC Kids Markers are long-lasting coloring markers for creative coloring and drawing projects for kids. They feature a blocked tip design that resists being pushed in. The bright, ultra-washable ink rinses off skin and most clothing, making cleanup simple. If the caps are accidentally left off after art time is finished, these markers won't dry out for up to 1-week* These ACMI approved and non-toxic markers are perfect for use at home or school. *Average duration. Cap off times vary by color: 1 week to 1 month for most colors; 4 days for Brown, Madder, Atlantic Blue; 24-48 hrs for Red, Pink, Purple