Anti-fog wrap이 $20이네요.
관심 있으신분들을 위해서
Haida HD4635 Lens Heater/Warmer/Anti-Fog Belt USB w 3 Heat Settings
https://www.amazon.com/dp/B097P8PNQS/ref=cm_sw_r_cp_api_glt_fabc_MRBK8XEXFASSST9CSRW8?_encoding=UTF8&psc=1
Who's 행복한사진사
https://www.instagram.com/ugenekwon