Penguin Bamboo Socks 

Size 4-7 UK, 36-40 EU, 6-9 ladies US

80% Bamboo Fiber

17% Polyamide

3% Elastane

Super soft, Anti bacterial, Reinforced heels and toes

Joya bamboo socks contain more bamboo fiber than most other brands

Recycled cardboard label

40 degree wash, don't tumble dry