The World Federation One Stop Fiqh

Ritual 242

It is forbidden for a male pilgrim, in ihram, to wear any garment with buttons, or that used as pullover, such as cloak. It is also forbidden to wear trousers, and the like to cover one’s private parts, unless they do not have buttons. However, as a matter of obligatory precaution, he must completely refrain from wearing traditional clothes, such as shirt, cloak, jacket, Arabian thawb or dishdasha (gown), albeit not buttoned up.

However, there is no objection to tying a sewn purse/wallet worn around the waist or over the shoulder. Likewise, it is permissible to use a sewn belt to support a rupture, or hernia, for example. He can also use a sewn kilt or covering, but he must not let it cover his head.