MEINL Sonic Energy Gymbag (GYMBAG-SONIC) Whether you're going to school, yoga or exploring the great outdoors, this versatile gymbag has everything you need. Featuring a golden Meinl Sonic Energy logo, it's perfect for carrying your essentials in style. Made from 100% OEKO-TEX® certified cotton and featuring a practical drawstring closure, it's the ideal companion for any (sound) journey.