Shilucheng Thermal Insulated Blackout Curtains/Drapes 52 x 63-Inch Beige 2 Panels $12.80 AC @Amazon

Impedes 85%-99% of light and UV rays, blocks out sunlight, insulates heat and cold, reduces noise levels by 10-20 dB.
Link: https://www.amazon.com/dp/B01LZ0RMB8
Code: SIWIP2ZG
Final price: $12.80