The Thermos 12 oz. Kid's F400 Funtainer Bottle Plastic Replacement Straws in Clear are designed for easy sipping and are made of durable silicone material. These collapsible straws are lightweight at 0.16 ounces and feature a clear color, perfect for adding a vibrant touch to your child's drinkware. The Thermos brand ensures quality and reliability, making these replacement straws a convenient and practical choice for your child's sippy cup or mug.