You may find your baggage allowance in the itinerary receipt. The signs are based on two concepts of baggage transportation: weight and piece.
1. Weight concept is about weight limitation. In itinerary receipt, it is marked with the signs "K" and "KG." The figure (0, 10, 20, etc.) shows the number of kilos which passenger may take with him/her free. The weight of baggage may be distributed among several bags provided they don't exceed the dimensions established by the airline company.
2. Piece concept is about limit for the number of baggage pieces. To this effect, baggage is registered per piece. In itinerary receipt, it is marked with the signs "N," "PC," and "P." The figure (0, 01, 1, 2, etc.) shows the number of standard baggage pieces for for the selected flight. The weight of an item is established by airline company.
If there is, for example, "20K" in the "Baggage" field of your itinerary receipt, you may take baggage of no more than 20 kilos only. If you see the "2N" sign, you may take two pieces of baggage free.