The Thermos Replacement Straws are designed specifically for the 12 Ounce Funtainer Bottle, featuring a clear color and one size fits all. Made of silicone, these spill-proof straws are dishwasher safe and insulated to keep drinks cool. With removable handles and a straw lid style, these Thermos replacement straws are suitable for babies as young as 12 months old. Made in China, this unit quantity of 2 Thermos straw is a convenient and practical addition to your baby feeding essentials.