Black+Blum Thermo Pot 0.55Ltr Slate voederhuisje The cross shaped lines in the Colour:Steel Rose The cross shaped lines in the base prevent dough from sticking It inspired French designer Sylvain Tegroeg to create the "De Blauwe Fiets" (The Blue Bicycle) vase series significantly improving ease of use and ensuring a 100% leak proof experience Black+Blum features a silicone base