Chest up to 43in

100% pure cotton

5XLarge: Waist 46in

darcyclothing

This interesting reference is taken from the V&A website:

Fur Felt Trilby Hat (HA118) Hat size:X Large Chest up to 43inThis style has been discontinued and our closest match is HA117. Fur felt is used in making these superior classic trilbies. The brim is a generous 7cm wide. They are manufactured in England Sizes: Small 55 cm Medium 57cm Large 59 cm XLarge 61cm Due to the bulky size of these hats we may have to charge additional postage for overseas customers. We will contact you directly once we receive your order if this is the case. Approximate measurements: Crown