Room Diffuser Refills. Presented in a recyclable/reusable white paper bag are refills come in a 100ml round bottles and also comes with natural new reeds.  
The following scents are available:
Dark Honey & Tobacco £20.
Peppermint & Eucalyptus £20.
Rocksalt & Driftwood £20.
Cassis & Fig £20.
Lime,  Basil & Mandarin  £20.
Squire £20.