The specific dress code for NEET 2021 has not been announced. As per 2020 In NEET exam dress code, it was specified that candidates can wear half-sleeve clothes with low heel sandals. You are not allowed to wear brooch, flowers, badge, or jeans. Clothes should be simple and should not contain any other metal eliminate, rings or other ornaments should not be carried. Kurta pajama is not allowed. Shoes are strictly prohibited inside the examination hall. It is advisable that candidates wear sandals and chappal with a thin sole. In 2021 mask can be allowed as it becomes necessary now a days.

Hope it would be helpful.