Nitori Blackout Grade 1, Heat Shielding, Soundproofing Curtains (Poire Ivory 100X110X2)

Purchased about 4 years ago.
These are highly functional curtains with light-blocking, heat-shielding, and soundproofing features.
They are clean enough not to be noticeable during use, but please understand that as this is a personal inspection, there may be minor stains.

I believe they cost around 6,000 yen when purchased.

The following is quoted from the Nitori website:
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Comes with adjustable adjuster hooks for length.
(A hook specification that makes drapes look beautiful)
Light-blocking Grade 1: Light-blocking rate of 99.99% or higher
(JIS standard light-blocking level. There are grades 1-3, with grade 1 having the highest light-blocking rate.)
Light-blocking Level 5
(Nitori standard light-blocking level. There are 5 levels from 1 to 5, with higher numbers indicating less light penetration.)
Heat-shielding effect: Blocks outside air and prevents room air from escaping.
Soundproofing effect: Reduces sound leakage from inside the room and external noise by applying a resin coating to the back of the fabric.
Shape-memory processing for beautiful pleats even after washing.
Machine washable at home.