Keep your cigars in optimum condition with the reusable Water Pillow BLUE humidifier! This blue pouch contains a 'pillow' made of humidification gel activated by dunking in either distilled water or propylene glycol solution (recommended). Lasts approximately 45-60 days under normal ambient conditions before needing to be refilled. Comes in two convenient sizes: Standard and XL, to satisfy all of your humidification needs. This is the most affordable way to maintain your cigars fresh! Standard size Water Pillow BLUE (2.9" wide x 4.0" tall x 0.25" thick) will keep up to 10 cigars humidified, while the bigger Water Pillow BLUE XL (5.5" wide x 8.0" tall x 0.25" thick) is perfect for small desktop humidors or large travel humidors, handling up to 25 cigars each.