New Era - 10Deep "BrassKnuckles" Plaid Fitted Hat Size 7 3/8 100% Cotton
Note:The back is breathable and soft hence the lack of structure.
I've been an avid collector of New Eras over the last decade. Stored away & Never Worn, so be sure to check back regularly since they're going up for sale. Last 2 pics show what's going up, stored in plastic bins to avoid dust & damage. Thanks for looking.