I used these curtains for only two days until my new ones arrived because I ordered the wrong size. They have been stored in their original packaging since. This is a high-performance product recommended for new beginnings, with a 4-star rating on Nitori Net. ------------------------------ ○ Blocks heat, cold air, and sight while allowing light in. ○ Comes with adjustable hooks to customize the length. (A-hooks for a beautiful drape.) ○ Light-permeable: The room doesn't get dark even when the sheer curtains are closed during the day. ○ Heat shielding effect: Blocks outside air and prevents your room's air from escaping. ○ UV cut rate: 93% ○ Heat insulation effect rate: 25.5% ○ Heat retention effect rate: 24.8% ○ Obscuring processing: Prevents visibility from the outside into the room. ○ Level of obscurity: Day 5, Night 5 (Nitori's standard obscurity level. Levels range from 1 to 5, with higher numbers indicating greater obscurity from the outside.) * Visibility may change between day and night due to different lighting conditions. ○ Machine washable at home. □ Dimensional change rate / Vertical: -1.0% Horizontal: -1.0%