Cigar Caddy Crystal Gel Humidification SystemCigar Caddy creates the world's most durable travel humidors and their accessories. Whether its their crushproof, airtight on the go box or the fluid and foams to go alongside it, you can shop around knowing you're getting quality products. Reasons to buy the Cigar Caddy Crystal Gel Humidification System Steady release of constant humidity Lasts up to 90 days before refill Dimensions and Capacity: Regulates humidity for up to 150 cigars Comes in 2oz