The slipper uppers are made from recycled PET (post-consumer plastic bottles) which is turned into a soft brushed felt. The double-layer construction provides warmth, comfort and durability.

The classic slip-on style feature Castor insoles - Super-soft, comfy foam made with castor oil, a naturally derived material helping to reduce the need to use crude oil.

Each insole has a top layer of recycled brushed PET felt for softness under foot.

 Gumbies signature Gumtread recycled rubber outsole.