Each is approximately 140 grams
About Colours: Bath bombs which contain mica have small platelets of colour. These do not dissolve in water so float in the bath and can stick to dirt or grease in the bath. Kirkwood Body and Bath's bath bombs are formulated with a natural wash off dispersant (Polysorbate 80) to assist in non-slipping & non-staining, however, Kirkwood Body and Bath's makes no guarantee that bath bombs will not stain porous surfaces, and will not accept any liability for any damage caused. It is common for bath bomb colours to become part of the bath tub ring, but will generally clean off with your regular cleansing agent or white vinegar. Please consider this before purchase.