EarGear offers a variety of products — for SONNET, OPUS, and RONDO. Their site is clearly labeled and easy to navigate.

I have used their cochlear implant product and it has never failed me. However, I did find it to be a little bulky from time to time. I frequently use the Mini Cordless product for my SONNET or OPUS 2. This product is actually designed for hearing aids, but provides a perfect and snug fit over my processor. It covers the microphone and can help with wind noise reduction, but does not affect the sound quality. The Mini Cordless is positioned over the areas of the processor that are most sensitive to moisture and has worked consistently for me. Its snug fit makes it practically unnoticeable and very comfortable.

The SONNET already has an IP rating for water-resistance, but I still choose to wear the EarGear in cases of extreme perspiration. (Mainly just to provide added protection and keep the processor dry.)

If you are looking at EarGear, I would suggest giving this a try!

EarGear :: https://www.gearforears.com