Sennheiser CX 680 Sports Earbuds with Volume Control and Earfin Holding System

We partnered with Adidas on ergonomic design for a precise and comfortable fit. A unique moisture-resistant materials wicks away sweat and rain. Dynamic Sennheiser transducers deliver true sound performance. Designed for extreme movement. Flexible materials absorb shocks and strain. Short cable ideal for use with MP3 armbands.

Owner Reviews, Ratings, Comments and Criticism
I have been on a quest for a new pair of earphones for weeks. I have spent countless hours reading hundreds of reviews on various models. My main criteria (in order of importance) were: 1) Don't fall out when doing strenuous exercise like running, 2) Won't cease functioning or experience a decrease in functionality due to sweating (I sweat profusely when exercising, e.g., my clothes are normally drenched after an hour of cardio), 3) Comfort, 4) Price, 5) Sound quality, and 6) Appearance/Style.