The classic Gumbies Outback slipper designed to take you \'Outback\'. With Gumbies signature recycled rubber outsole the Outback will take you further than your back door! 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 features 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 added softness.