3.5 L Detoxify & Mineralize the body, slowly reverse the aging process! "Drinking healthy alkaline ionized water is a simple, most effective way to Alkalize, Hydrate, Detoxify which is a gradual process of acid waste accumulation. Filter materials: Active carbon, Ion Exchange resin, negative potential particles, Bio minerals, FIR (infrared ceramic energy beads) Filter life: 300 litres - For example: 5 months capacity for 1 person drinking 2 litres/day or 2.5 months for 2 people ph: 9 - 9.5 *depending on water source ORP: -100 to -200mV (Oxidation reduction potential/Antioxidant capacity: - 300 to -400mV), *depending on water source Soft and great tasting water BPA Free materials The manufacturer uses Calgon Activated Carbon which is imported from USA. What do medical doctors say: Dr Kathleen Wills: Medical Doctor, Doctor of Natural Medicine and Clinical Nutritionist, practicing integrative medicine in Auckland Combine with another item the buyer has paid shipping on. It's free if it fits with the satchel. Bubble Wrap is available via Option #2 For bulk buying, choose Option #3 $14.99 option. Thank you