The secret to whistling is in the lips, especially with these fun and sassy whistles! Shaped like big red lips, these whistles are great as birthday party favors. Pro tip: Hand the whistles out to kids on their way out the door so you don’t have to listen to a chorus of whistles excitedly blowing! Also great as classroom prizes or kids’ giveaways, these whistles will make kids smile! Plastic. 2 © OTC