Colour-Coded Fleximats 5 "Very handy" Ms Prentice 18 September 2020 I’m really liking these mats and found it so easy to scoot veg etc into the pots. But I have one question: what is the purpose of the yellow mat? What does its symbol mean? A note from the team Thank you for placing your review. We're delighted the fleximats are working so well for you. The symbol of the yellow mat is for poultry. Thanks again for your feedback.