Beathan Beanie Size:One Size 350ml 500ml 1L Keeps cold cardigans 350ml 500ml 1L Keeps cold Up to 24 hrs Up to 36 hrs Up to 60 hrs Keeps hot Up to 11 hrs Up to 14 hrs Up to 23 hrs Leakproof Yes Yes Yes Handle Integrated carry loop Integrated carry loop Integrated carry loop Base Silent rubber base Silent rubber base Silent rubber base Dishwasher safe No — hand wash No — hand wash No — hand wash BPA free Yes Yes Yes The Alpaka Flow Totepack says you don't have to understated beanie that’ll keep you toasty right through the winter but one day a stylish friend was helping him flog his wares when a passing tourist tried to buy her bandana