The sennheiser pmx 686i sports headphones will be a great workout companion and have been designed to provide the user with superb stereo quality these lightweight headphones sit securely in place even during intense training sessions thanks to their durable neckband and the vertical in ear design helps you stay safe and alert in busy outdoor areas the earphones are sweat and water resistant and feature hygienic antimicrobial ear adapters the para aramid reinforced cable is durable and thank