'Saturday delivery', self::MorningDelivery => 'Morning delivery', self::TimedDelivery => 'Timed delivery', self::SameDayDelivery => 'Same-day delivery', self::Insurance => 'Insurance', self::SpecialHandling => 'Special handling', self::ReturnDocuments => 'Return documents', self::RemoteArea => 'Remote area', self::Protocol => 'Protocol', self::Refrigerated => 'Refrigerated', self::ExchangePackage => 'Exchange package', }; } }