35% Lambswool 18% Possum 10% Angora 18% Merino 15% Nylon 4% Lycra Made in New Zealand Soft and luxurious feel Arch Support Reinforced Sole Soft Rib Top Classic Linked Toe Seam The Mongrel Tasmanis Possum Boot Socks are pure luxury. Every pair of Mongrel Tasmanis Possum Boot Socks has been designed and engineered for maximum comfort and warmth. Possum fibre has a unique hollow structure. This gives the possum fibre an extremely high warmth to weight ratio, creating a warm and comfortable garment without bulk. So efficient thermally is this sock, it can keep the wearer comfortable in wide ranging temperatures i.e. cool in the heat, warm in the cold even if that's all in the one day. The extra thickness on the sole, & cushioning around the toe and heel, make these socks particularly comfortable. Every night an estimated 90 million Possums ravage 22,000 tonnes of native vegetation. New Zealand's forests do not have the natural defence's they need to survive the possum attack, defence's like thorns and hard bark the Australian bush has developed over time. Possums are considered vermin and are in plague proportions, with no natural predator in NZ, man has had to step in to preserve NZ native forests. So by buying a possum fur product, you can enjoy the luxurious fibre that is possum fur and help fix a devastating ecological threat.