Protect yourself and that includes your head. Getting smacked down without the proper headgear can end your Muay Thai career earlier than necessary, and it is a short enough career as is. Over time, the head incursions build-up so your headgear is very important. Once again, when selecting headgear, decide what is comfortable and fits well for you. Padding and fit is what will save your head and your brain in the long run. The chin strap should not be loose. Likewise decide if a slipper lining is for you. If it slips around, it will distract you and be a problem. It can also obscure your vision if it slide into our face. Fairtex Super Sparring Headgear is highly rated, especially for Muay Thai.