The UE Wonderboom 2 and the UE Boom three are quite portable and durable. The Wonderboom is slightly a lot more portable than the other two, weighing in at 15 ounces and boasting IPX7 waterproofness. Its short and stout shape also can help it vanish inside of a backpack. https://www.bluetoothspeaker.top/usb-rechargeable-fast-charger-sound-wireless-speaker-with-led-256-rgb/