Buff Ervin Merino Wool 549 kr Ervin is a classic sailor hat from Buff that fits well and is comfortable on the head.It is knitted in 100% merino wool. Unfortunately, the product is out of stock. :( Please contact us if you are wondering if / when it will be back in stock =) Stock: Share Information Reviews Ervin is a classic sailor hat from Buff that fits well and is comfortable on the head.It is knitted in 100% merino wool.