It's a GP-5 Gas Mask. Mine's in white.<br /><br />---<br /><br /><i>If you'd like to buy me a cup of coffee or help keep my lights on, you can do so via Ko-Fi at my&nbsp;<a class="external" href="https://www.deviantart.com/users/outgoing?https://ko-fi.com/lonelyzentai">Tip Jar</a>. Thank you for supporting my hobby! (:</i>