Bamboo grows organically and thrives naturally without using any pesticides or fertilizers and is 100% sustainable and biodegradable. Bamboo fibre has a round surface so is very smooth and sits perfectly next to the skin. It ' wicks' away moisture from the body which then evaporates, keeping you naturally drier and more comfortable. The cross-section of the bamboo fibre is filled with various micro-gaps and micro-holes giving it much better moisture absorption and ventilation keeping you cool in the summer and warm in the winter. Bamboo has a unique anti-bacterial bio-agent which resists the spread of bacteria on the skin without any adverse affects, such as abrasion or irritation. Bamboo garments achieve a score of 50 UPF which means a 98% reduction in UV activity reaching your skin.