Kolos hookah bowls have an original design. Each bowl is handmade. Covering each bowl with glaze by hand makes it unique. The glaze is used by German manufacturers. The main material used is white and red clay, which undergoes the process of "milking" - the treatment of bowls with milk at a temperature of 200-300 degrees. Such treatment improves water permeability and gives a characteristic shade to Kolos bowls.