Mack’s® Silicone Ear Plugs. Great for Float Spas. by Mack's | Jul 17, 2019 | Silicone Ear Plugs, Surfing Ear Plugs, Swimming Ear Plugs | 0 comments Block out the world…and the water with Mack’s® Pillow Soft Moldable Silicone Putty Ear Plugs. Buy Now