"SednaEarfit Foamax" is the brand first form type earbud that focuses on both high sound insulation and high sound quality with a thorough research and multiple prototypes with AZLA knowledge of earpieces. Adopts a unique high density foam that ensures high sound isolation and a hybrid composition of premium medical silicone that provides high holding power against the nozzle of the earphone. Many foam types tend to reduce high frequency characteristics for a higher sound isolation and fit Foamax has a unique internal design to ensure a wide sound stage and crisp sound while reducing high frequency attenuation. In addition, the foam type can be worn once and then put it into the ear canal with its resilience force, but many foam types have strong resilience and restore it before putting it into your ears and put strain on your ear canal. That's why AZLA researches the optimal recovery time of foam types. Foamax will slowly restore about 30 seconds after crushing, so it fits in the ear canal before putting it in your ear. In addition, it has a circular design that reduces irritation to the ear canal, and an ultra-thin film coating that prevents sweat and sebum stains. It also features a proprietary honeycomb core less wax guard with a damper function developed for ideal acoustics. Standard size type, 5 sizes of S, M, M, ML, and L. This product consists of 2 pairs of single size and 3 pairs of closest sizes including intermediate sizes. SednaEarfit Foamax covers the common sense of traditional foam earbud tips and provides high sound insulation and high sound quality at the same time.