🛀【Superior Filtration System】The spa mineral filter sticks are made of zeolite, anion, zinc, dechlorination ball, VC ball, high efficiency filtration material is durable and can be used with cold and mild hot water spa tubs 🛀【Efficient Filtration】The mineral filter stick makes water healthier with multi-layer filtration, which can effectively filter out various impurities, chlorine. The change you can see, smell and feel, it improves water quality 🛀【Reduces Skin Irritation】Zinc, the active ingredient in hot springs silver ion cartridge, helping to reduce the need for irritants and reduce skin irritation 🛀【Easy to Install and Low Maintenance】This hot springs silver ion cartridge is easy to install and heat free, can be installed with your existing flow, just drop it into your existing filter and let the hot tub wand do its job. The maintenance is low, helping to save you time and money 🛀【Enhance Bather Comfort】Hot tub silver ion mineral bars automatically add trace minerals to the hot spring, reducing impurities in the hot spring, making the water clearer and cleaner with virtually no chemical odor, ensuring your spa time is more enjoyable Comfortable and warm, making you feel as comfortable as in a pure natural hot spring!