Why are there different sizes of earbuds?

Four sizes of NERVANA Earbuds are included with each set of NERVANA Headphones. These are designed to fit most typical adult ear canals. We constructed the earbuds for comfort and fit, but most important was finding a shape that could fit snugly within the ear canal to apply the right amount of pressure against the skin of the left ear canal to get good NERVANA signal quality. This is why selecting the best size earbud for your ear is essential.

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