Check the listing for details. Mack's Kids Earplug Soft Moldable Silicone Putty Safe Waterproof 6 Pair 6 Pack. Condition: New. Listed at 23.08 USD. Keep these Mack's Pillow Soft Ear Plugs Kid Size handy for the next trip to the pool. They're specially designed for use by children. Mack's earplugs are larger and safer to use than most other brands. They provide a good seal that can accommodate the ear sizes of most kids. Made of soft silicone material, these plugs can be molded into the ear's contours for better comfort. They can be used when swimming to seal out water, which can help prevent the swimmer's ear. These silicone earplugs are also a good way to help children sleep or study. They can also be used to protect ears during loud events or when flying on a plane. With a bright orange color, each pair is fun for kids and easy for parents to see. They have a noise reduction rating of 22 lb. These Mack's Pillow Soft Ear Plugs Kid Size come in a box of six pairs and are available in multiple pack sizes.