Sold as a 4 pack. Luxury 24/7 bamboo socks. They come halfway up lower leg or can sit on the ankle in a loose fit. Now with extra strength in the heel and toe for improved comfort. 'Completely disposed of my old sock collection and looking forward to a lifetime of enjoying the comfort of bamboo socks ' N. Butterworth, Nottingham **the lengths of the socks in this 4 pair pack , can vary slightly between the different colours** The 4 top colours, all with contrasting heel and toe. These we call the 'Freethinker' socks for independent minded men everywhere. They have 'for free thinkers' on the label and a BAM logo on the sole. Composition 76% Bamboo Viscose, 23% Polyamide, 1% Elastane Size Giude UK 8-11 / EU 42-46 Washing Guide 40 degrees, ideally do not tumble dry. You can simply put in with the usual wash. No special requirements. Whether BAM is worn on the side of a mountain in winter, or as an everyday luxury item, BAM = Performance, giving ultimate comfort no matter what you do. Here's what all BAM garments offer: Moisture Wicking BAM fabric is highly absorbent, 3-4 times more so than cotton, pulling moisture away from your body. This moisture then evaporates, keeping you more comfortable. Climate Control BAM garments are highly breathable, so are cool in the heat, yet very warm in the cold because of their cellulosic structure, trapping warm air when required. Anti Bacterial BAM fabric naturally disposes, and inhibits growth, of bacteria, which is what makes some other performance clothing smell. Best in class, according to feedback. Ultra Soft BAM clothing is incredibly soft and comfortable because of its smooth microstructure. BAM is the first and still the softest bamboo clothing. Eco Friendly BAM clothing is highly eco friendly due to the growth patterns of bamboo, especially compared to other man made performance fabrics and regular cotton. This comes in 3 key areas: 1. Natural non polluting growth: Bamboo is 100% naturally grown, without using any pesticides or fertilizers. It's not oil based like most performance fabrics. 2. No extra water required: The water required for growing bamboo is minute, mainly just from what falls as rain. 3. Space efficient: The yield (i.e. the amount of product) you get from an acre of bamboo is 10 times greater than the yeild you get from, say, cotton. In an age where land use is under enormous pressure this is huge.