If you love listening to music outdoors, you know that it can be risky to bring a portable speaker anywhere even remotely rugged. That's why a lot of people invest in extra-durable speakers like the UE Boom – but for those who don't want to shell out $100, the All-Terrain Sound (on sale now for $29.99) makes for a much more affordable option. The All-Terrain Sound is built specifically for outdoors listening. You can clip it to your bike, slip it in your backpack, or stick it to the wall of your shower. Not only does this Bluetooth speaker guarantee 14 hours of battery life, it's also so durable that it can't be damaged even if you drop it more than ten feet onto concrete. Normally, the All-Terrain Sound retails for about $70, but Daily Beast readers can get it on sale in the shop for $29.95 — a 57% savings.