If you plan to wear a British-style pith helmet and are a piper, I caution against buying the Wolseley pattern.

The brims are too wide and your bass drone will be constantly banging against the helmet, knocking it askew. Won't do the drone or the helmet any good either over time.

Buy the M-1871 model instead. Far more comfortable in the sun/heat that a glengarry or balmoral. I've always been surprised why so few pipebands in the southern half of the US don't wear them. Very practical.