We use OEKO-TEX certified bamboo towelling, which means that there are no nasty chemicals or substances in them and totally safe for children. Fluffy, like cotton wool. Bamboo has been shown in studies to be naturally anti bacterial and more absorbent than just cotton. We've added a cam lock webbing loop for easy attachment to buckets, brolly ribs etc. Hand made in the UK measuring approx 50cm x 30cm. If you'd like a different size contact us for custom options.