The Motorsport is designed with a hollow canal for under helmet use to reduce wind buffeting. It is comfortable and easy to remove. Check local laws governing use no Noise Reduction Rating Listed. (Style 4RT)
 
Prices may vary depending on style, size, colors, handles, materials and features.  
 
For custom plugs, you must have a physical silicone or digital ear impression for these to be able to be produced - These are custom fit and 3 D printed molds for your ear.  Highest quality Personal Ear Protection Plugs.  In the Portland area, email for an appointment for you 3D digital scan (service included in the cost)
 
Hollow, softest silicone for comfort
Reusable, washable (soap and water)
Waterproof
Custom to fit your ear!
Good for  under muffs but can be used for all-around hearing preservation