Safety 1st are authentic equestrian equipment and is also breathable and lightweight. Hat is a small for overall small "or" head and will not be a good thing to have, also it is shallow so it is outside MC Squared when going to or in a bag or car trunk, not bulky. Sizes are Small to Medium and Medium to Large with adjustable adjuster so it is easy to match any. Small – Medium (52-56 cm: Wide 15 cm ))、 Medium – Large (57-61 cm: Width 16 cm () Weight is 420 – 450g