Amazon.com: Case Compatible with JBL FLIP 6 / FLIP 5 Waterproof Portable Bluetooth Speaker. Hard Travel Storage Holder for JBL FLIP 4 and USB Cable&Adapter - Black (Case Only) : Electronics
JBL Xtreme Low Frequency Mode, Extra Bass - Tom's Tek Stop
Best wireless JBL speakers: Portable and Xtreme - SoundGuys