MET Helmets Hooray MIPS Child Helmet - Green Forest X-Small 46-52cmMET Helmets Hooray MIPS Child Helmet Green Forest X Small. The MET Hooray MIPS Helmet is safe comfortable and has plenty of toddler specific features that will protect the next generation of cyclists. The shell of the MET Hooray MIPS has a purposely flattened part at the back in order to be comfortable in any child seat. It also covers a large part of the two most sensible brain areas; the back and the temples. The internal shape features an