Sending a 100kg parcel requires freight services rather than standard courier options. For international shipping to Nigeria, air freight is fastest (5-10 days) but expensive, typically costing $500-1500 depending on origin and cargo type. Sea freight is more economical ($300-800) but takes 4-8 weeks. You’ll need to work with a freight forwarder who handles documentation, customs clearance, and logistics. The parcel should be properly palletized and secured for transport. Required documents include commercial invoice, packing list, and possibly certificates of origin. Consider LCL (less than container load) for single large shipments or FCL (full container load) if shipping multiple items. Factor in customs duties, port charges, and local delivery fees in Nigeria, which can add significantly to costs. Some courier services like DHL Freight handle large parcels but at premium rates.