Full article: https://zackhenderson.com/cast-iron-vs-competition-kettlebells/ Good quality kettlebells are made according to one of two general design styles – competition kettlebells (so named because they are used in traditional Russian kettlebell sport) and cast iron kettlebells (so named because, well, that’s what they’re made of). There’s plenty of debate on the Internet about which style of kettlebell […] Read more
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