If you prefer a far more flexible ultra-portable travel speaker: The Ultimate Ears Miniroll is a lot more expensive and a little larger than the JBL Go four, but it sounds somewhat fuller and it's got a handy integral strap that helps you to strap it to your pole https://www.bluetoothspeaker.top/fabric-wireless-outdoor-speaker-waterproof-ipx6-mini-bluetooths-speaker-portable/