Umbro have apologised for 'any offence they have unintentionally been party to' by making Linfield's new away kit.
The jersey came under criticism last week over its similarities to the Ulster Volunteer Force flag.
The purple jersey with an orange stripe was unveiled on Wednesday and resembles the colours of the loyalist paramilitary group, who were responsible for more than 500 deaths during the Troubles.
Umbro say they are "opposed to all forms of discrimination, discriminatory behaviour and violence" and added that they will not be promoting the kit on any of their channels.
They said in a statement: "At Umbro we believe in the unifying and democratic power of football. This is why we are opposed to all forms of discrimination, discriminatory behaviour and violence.
"Kit designs are a collaborative process and this kit was based purely on guidance from the club. We apologise unreservedly for any offence we have unintentionally been party to.
"Furthermore there will be no promotion of this product on any Umbro channels."
Linfield last week hit back at criticism over the new kit.
In a statement posted on their website, Linfield said: "Earlier this week Linfield FC revealed images of the club's new Away kit for the 2020/21 season.
"The design has met with approval from large numbers of supporters but unfortunately and sadly, there have been certain suggestions from a small number from outside the club which this club can not ignore.
"For the avoidance of all doubt, the design is of a football kit for a football club and any similarity / likeness / resemblance with any other design used by any other entity is totally coincidental and entirely unintentional.
"Any allegation or inference to the contrary is robustly and vigorously rejected by this club which prides itself on being inclusive, open to all and representative of all.
"Linfield FC is totally opposed to all forms of bigotry, prejudice, violence and discrimination."
