Vintage Munchkin Soft Tip Metal Baby Spoon Lot of 10. Seven of them change colors with heat. These spoons turn white if the food is too hot for the Baby’s mouth. The ones that change color are the 4 blue ones and 3 with a very light reddish tinge. The other three don't change color.  All 10 spoons are made with silicone. Measure approximately 5.25" long. Please look at the images and don't hesitate to ask if you have any questions. Thanks.