Carry up to six wet panels:

RayMar 16" x 20" Wet Panel Carrier: $41.95

This corrugated plastic wet panel carrier from RayMar can hold up to six wet panels, including 12" x 16" or 16" x 20". This carrier is lightweight, waterproof, and strong, making it great for workshops or plein air painting sessions. A built-in carrying strap makes it easy to take with you anywhere.