Desiccant Bags and Humidity Indicator CardsBentonite Clay DesiccantHigh moisture-absorbing ability helps prevent mildew and rust damage to products during shipping and storage.Tyvek® BagsDurable Tyvek covering prevents tearing. Meet Mil. Spec. Mil-D-3464E and are certified as Class 100 Clean Room compatible. FDA compliant for direct contact with food and drugs. JEDEC compliant for dry packaging of electronics and semiconductors.