Boveda's high-tech Humidification Packets are engineered to maintain a specific humidity level. These unbelievably accurate packets maintain humidity levels at 72%, within +/-2%. The slender design allows you to store a packet virtually anywhere in your humidor without limiting the storage capacity. Easy, no fuss hunmidifaction, no need to worry about adding or re-filling water. Recommended usage: 2 packets for every 50 cigars. Each packet lasts 3+ months. Includes one (1) packet.