| Group | 2020-12-31 | 2019-12-31 |
|---|---|---|
| Raw materials and consumables | 33.2 | 50.5 |
| Work in progress | 17.5 | 11.7 |
| Finished goods | 589.5 | 389.3 |
| Total | 640.2 | 451.5 |
Cost of sales for the Group includes impairment losses for inventories of SEK 26.4 million (5.1). No significant reversals of prior impairment losses were made in 2020 or 2019.
Inventories, that is, raw materials and finished goods for resale, are carried at the lower of cost and net realisable value, thereby taking into account the risk of obsolescence. The cost is calculated using the first in, first out (FIFO) principle or weighted average prices. In the case of finished and semi-finished goods manufactured in-house, the cost consists of direct manufacturing costs and a reasonable portion of indirect manufacturing costs. Normal capacity utilisation is taken into account in valuation.