The earplugs are made of urethane foam. The "latex" in our foam earplugs is not natural latex, it is a synthetic latex technically called an emulsion polymer. It has the same properties as latex (water based, adhesive, etc.) but does not have the enzyme problem associated with natural latex. If, in the extremely rare instance you should experience any type of rash or skin irritation while using this product, please discontinue use immediately. Consult your doctor or go to your local medical emergency room if you believe you require immediate medical attention.

No. If these earplugs become soiled, they should be disposed of.

No. These earplugs were specifically designed to provide superior protection against noise. For water protection, we recommend that you try one of Mack's® moldable silicone or pre-molded flanged earplug products.

First try re-inserting the earplugs after carefully re-reading the directions. Be sure to insert the plug while pulling (with the opposite hand) up and back on the outer ear to straighten the ear canal. If you are still unsuccessful with a plug that has now warmed to body temperature, try another "cooler" plug. A plug that is cooler in temperature will retain its compressed shape and rigidity slightly longer, sometimes making it easier to insert. A sign that the earplug is sealing properly is that your own voice will sound more internal and exaggerated.

Mack's Slim Fit Soft Foam Earplugs are similar in length to most foam earplugs, but they are slightly smaller in diameter. Ear sensitivity varies greatly from one person to another, and even from one ear to another, on the same person. Any pre-molded earplug that works by exerting a bit of pressure back on the ear canal to seal it properly may, over an extended period of time, begin to cause some discomfort to the wearer. People with smaller ear canals experience this discomfort more often as "normal" sized earplugs don't fit as well into their canals. If you have smaller ear canals and/or sensitive ear canals, a smaller diameter earplug like Mack's Slim Fit Soft Foam Earplugs lessen this pressure and thus increase the comfort level.

No. If these earplugs become soiled, they should be disposed of.

No. These earplugs were specifically designed to provide superior protection against noise. For water protection, we recommend that you try one of Mack's® moldable silicone or pre-molded flanged earplug products.

First try re-inserting the earplugs after carefully re-reading the directions. Be sure to insert the plug while pulling (with the opposite hand) up and back on the outer ear to straighten the ear canal. If you are still unsuccessful with a plug that has now warmed to body temperature, try another "cooler" plug. A plug that is cooler in temperature will retain its compressed shape and rigidity slightly longer, sometimes making it easier to insert. A sign that the earplug is sealing properly is that your own voice will sound more internal and exaggerated.