For this service, the cargo size must be no more than 360 mm in one of three dimensions. The sum of three measurements should not exceed 700 mm, the minimum size is 110x190 mm. The maximum weight is 2.5 kg. Tariffs for sending items of the 1st class depend only on the weight and the place of shipment, the distance to the tariffs is not affected.
The speed of delivery of first class shipments in comparison with usual shipments is higher due to a new sorting and logistics technology, in which shipments are processed directly at post offices, bypassing the sorting nodes and are then only delivered by air, rather than combined, like traditional mail.
Using this service, you get the highest possible transfer speed and priority in processing.