Products Material Description: *95% Bamboo Fiber, 5% spandex Bamboo fiber has particular and natural functions of anti-bacteria and deodorization It is validated by Japan Textile Inspection Association that, even after fifty times of washing, bamboo fiber fabric still possesses excellent function of anti-bacteria. Its test result shows over 70% death rate after bacteria being incubated on bamboo fiber fabric. Bamboo fiber's natural anti-bacteria function differs greatly from that of chemical anti-microbial. The later often tend to cause skin allergy when added to apparel. Because the cross-section of the bamboo fiber is filled with various micro-gaps and micro-holes, it has much better moisture absorption and ventilation. With this unparalleled micro-structure, bamboo fiber apparel can absorb and evaporate humans sweat in a split second. Just like breathing, such garments make people feel extremely cool and comfortable in the hot summer. According to authoritative testing figures, apparels made from bamboo fibers are 1-2 degrees lower than normal apparels in hot summer. Washing and Dry Description: *Separate lights from darks, and wash separately, benefit to keep colors bright *Suitable for hand washing. To prevent repeated rubbing washing with big strength. *Machine wash in cold to warm water, hot water will destroy fibers' soft *Preferably on the delicates cycle, and don't use bleach or fabric softener. Neutral detergent can prolong the life cycle of underwear. *Air dry in the shade. If you're in a hurry, tumble dry on the lowest heat setting and remove as soon as they're dry.