Men's bamboo fibre brief 75% bamboo, 20% acrylic, 5% spandex Cool, breathable, durable, anti-bacteria, feel cool in summer Men bamboo fiber brief ... : 75% bamboo, 20% acrylic and 5% spandex.Bamboo fibre has the feature of anti ... skin. Cool in hot season.There are 8 features for bamboo fibres1 soft and be mild to the skin.2 Good ...