These are clear plastic containers from MUJI. They feature a slim design. Please refer to images 14 and 15 for details on materials, etc. They have been stored with little use, so I think they are clean, but there may be scratches and minor imperfections associated with used items. Please understand that these are used items before purchasing. - Purpose: For cold water only - Material: Clear plastic - Capacity: Set of 2, 1 liter and 2 liter - Features: With lid, slim design