A guide to tog ratings
| 4.5 tog | for summer use |
| 9.0 tog | for spring/autumn, particularly in milder parts of the country |
| 10.5 tog | for spring/autumn for those with central heating, who share a bed (more heat is generated) |
| 12.0 tog | for slightly more warmth |
| 13.5 tog | for colder seasons, or for those who prefer a warm duvet |
| 13.5
tog Four Seasons |
3 warmth options from 2 duvets. A 4.5 tog for summer, 9.0 tog for spring/autumn, and join them together to make a 13.5 tog for winter |