Aunt Lydia's Bamboo Crochet Thread Size 3 100% bamboo from viscose is an earth friendly sustainable and renewable resource with a recycled core and label. A size 3 crochet thread with a luxuriously silky hand. This bamboo crochet thread is really really soft. 100% bamboo. Size 3. 150 yards. Machine washable. Bamboo-a Renewable Resource: Did you know Bamboo is actually a grass? It is considered a renewable resource because it can reach a mature height of 75 feet in two months. Bamboo Facts: Odor resistant, breathable and cool, 3 times more absorbent than cotton. It is durable and strong with a silky hand. Its luxurious hand is perfect for shawls and wraps. Its rich colors, soft sheen and amazing drape make every project extra special.