On Ryanair, "hold baggage" refers to any luggage that is checked in at the airport desk and carried in the aircraft's cargo hold, rather than in the cabin. Unlike a "Small Cabin Bag" (which must fit under the seat for free), hold baggage always carries an additional fee. Ryanair offers two primary weight tiers: a 10kg Check-in Bag and a 20kg Check-in Bag. The 10kg option must be dropped at the check-in desk before you go through security, and you collect it from the baggage carousel at your destination. The 20kg option allows for larger dimensions (up to 80cm x 120cm x 120cm). If you bring an oversized bag to the boarding gate that was not pre-booked, it will be placed in the hold for a "Gate Bag" fee, which is significantly more expensive than booking online. For safety, you must remove all spare lithium batteries and power banks from hold baggage and carry them with you in the cabin.