It can fit easily inside your bicycle water bottle cage and that’s why you would want to have the boomBOTTLE Weatherproof Wireless Speaker by Scosche on your outdoor trips. It’s a rugged design ideally made to never let you stay away from musical entertainment no matter where you go. The speaker is not only durable but weatherproof at the same time. The acoustical benefits come from the use of dual 40mm drivers and a passive subwoofer. It has a 33ft wireless range and 10 hours of continuous playback. A speaker any adventurer would love to carry during their outdoor travel trips.