Pacific Outdoor Equipment has a range of ‘low impact’ sleeping mats. This information from the company:
Peak Oyl series
High performance with some added value, with Palm Oyl foam and recycled PET fabric, the Peak Oyl series continues our design revolution/evolution and further utilizes environmentally sensitive materials that help to foster emerging markets and technologies.
Eco Thermo 6
Bamboo fabric and insulation elevate the classic Ether Thermos design and performance to create a sustainable, carbon neutral alternative. Recycled aluminium valve and hemp draw cord in the included stuff sack round out the package.
(personally, i reckon it looks pretty damn ugly, but i suppose a sleeping mat shouldn’t be a fashion statement!)
Their gear is distributed in Australia by Sea to Summit
There is a bit of information about the company here.
[Thanks to Neb, from Backcountry forum for spotting this one].