BAUER IM5.0 helmet, size S, designed for safety and comfort in ice hockey. - Brand: BAUER - Model Name: IM5.0 - Size: S 52-57 cm Thank you for viewing. This helmet was used by my son for ice hockey lessons, but it has been used only a few times and is in excellent condition. It has a rather snug fit for safety reasons. My son used it when he was about 7 years old.