What makes bkr so special? bkr is the original––an innovative, thoughtful accumulation of details that together feel like love. We're perfectionist focused on hydration. We made the world's best glass water bottle, formulated an insanely hydrating lip balm and a cap to connect it your bkr and also have soft custom straws and straw caps for the best sip ever. Welcome to bkr, you won't want to leave.