The UE Wonderboom two plus the UE Boom three are quite portable and durable. The Wonderboom is slightly a lot more portable than the other two, weighing in at fifteen ounces and boasting IPX7 waterproofness. Its shorter and stout shape also will help it disappear inside of a backpack. https://www.bluetoothspeaker.top/multifunctional-charging-wireless-bluetooth-speaker-rgb-portable-5-0-speaker/