They were crocheted in May 2010, and I had one maintenance session in November. I love the slightly woven, spongier look of crocheted dreads. Because the crocheting method doesn't shrink your hair like backcombing does, mine are VERY long! They don't have as much volume as regular backcombed dreads because of that lack of shrinkage, but also aren't as weighty. Pluses and minuses to both methods!