bkr Tutu Straw 500ml set of 3 in Pink. bkr Tutu Straw 500ml set of 3 in Pink. These custom soft silicone straws have been designed especially for your 500mL bkrs. The straws come in a package of three; not too narrow or too wide, they're angled for easy sipping, and are super cute and dishwasher safe.. In Tutu- Opaque Balled Pale Peachy Pink. Set of 3. 9 long. BKRR-WA45. PKTTUPB-N53RT. In 2011, best girlfriends Tal Winter and Kate Cutler launched bkr with a focus on one main concept which in their minds was Beauty 101: drinking water is the foundation for soft, dewy, pretty skin. The clean, addictive, cult favorite, small-mouth, original glass water bottle was sustainable and eco at its core, but it also made drinking water blissful and easy for a change, and people started noticing. A growing obsession with the pretty little bottle resulted in reports that people were finally truly hydrated and, as a result, they were looking and feeling better. And, as it's said, the rest is history.