It depends on which series you own.
For the Explorer Series (ABS hard case):
The airtight seal is IP67‑rated, which means the case holds humidity extremely well. We recommend using a 62% or 65% Boveda pack directly inside the case – no need for additional sponges. Because of the superior seal, the humidity will stabilise quickly and stay constant for weeks. Over‑humidifying can cause condensation, so a small Boveda pack is all you need.
For the Heritage Series (leather + cedar):
Before first use, you must “season” the Spanish cedar lining. Lightly wipe the interior cedar surfaces with a distilled‑water‑dampened cloth (never wet), insert a 69% Boveda pack, and close the case for 24‑48 hours. This allows the wood to absorb moisture naturally. After seasoning, your cigars will stay at the perfect 65‑72% RH range during travel.
Pro tip: Always use distilled water if you choose to recharge any humidification device – tap water causes mold and clogs the cedar pores.