Bamboo socks are renowned for their longevity compared to regular cotton or wool socks that wear out after a few months. The average lifespan of a pair of bamboo socks can vary, depending on how often they're worn, the percentage of bamboo and how you take care of them. That being said, most bamboo sock manufacturers claim that they can last for up to three years if cared for correctly. One of the reasons that bamboo socks outlive their cotton cousins is because of the natural strength and elasticity of bamboo fibres. Because of this, bamboo socks are able to retain their shape and stretch over time - even after multiple washes - unlike cotton and wool.