HighlightsAvailable in 1g, 4g, 8g, and 67g (XX Small, X-Small, Small, and Large)Use in anything from small baggies to gallon sized containersMaintains 62% Relative Humidity in airtight containersThe Boveda 62% Humidity Control Pack is a functional and safe way for customers to keep their herb fresh and tasty. These environmentally friendly humidipak packs can even be used to help restore dried out product. The 2-way FDA approved technology will stabilize humidity within 48 hours. For best results, Boveda packs should be kept in closed, air tight containers or bags. To ensure the 2 year shelf life Boveda recommends storing in air sealed plastic bags.Boveda is fresh... exciting!