Keep cannabis or hemp fresh with the Size 4 Boveda. Preserve up to ½ ounce for months, and maintain those sticky, fluffy buds. Protect your cannabis from mold or overdrying by adding a Boveda pack to your jar or bag. Use this Size 4 to keep up to half an ounce fresh for months, or revive dry flower. 62% RH is for: People who prefer flower that is sticky and fluffy People who live in dry climates People who live in high altitudes Reviving dry weed Size 4 is for: Smaller airtight weed storage containers, such as jars, bags, canisters, etc. Preserving up to half an ounce (14 grams) of cannabis flower