Bamboo is an antibacterial fibre which reduces foot odour. These amazing socks are cool in summer and warm in winter, therefore they can be worn all year round. These socks are great for work, sports and leisure activities, and will provide comfort all day long. Our bamboo fibre is imported as Australia does not currently produce their own, despite this our socks are 100% Australian made in New South Wales Victoria. Fabric Composition Our thin bamboo socks are made up of 95% bamboo fibre and 5% lycra/elastane. Features Bamboo is a sustainable fibre and 100% biodegradable Naturally dyed Naturally Anti-bacterial Breathable and cool Available in loose top Health/Loose Top Socks Our loose top bamboo socks are made with a non-restrictive top to allow for better blood circulation for people who have circulation problems and diabetics. They are loose enough to allow for better circulation whilst also allowing them to stay up. Care Machine Wash Warm, Wash Inside Out. Do Not Bleach. Do Not Tumble Dry. Do Not Iron. Do Not Dry Clean. If you still have questions about our merino socks please check our FAQ page for more information.