And if they don’t have this. Hand sew a shoelace to the inside of the cover, and just tie it to the corner of the duvet. Shoelace knot about an inch down the corner tight, and it won’t go anywhere.
Both my duvet and cover have little loops. But one has loops that are just long enough to pull them through the other and tie a knot. Works well enough. I feel like some country that uses a lot of duvets should set a standard requirement for all duvets to have loops and all covers to have ties.
This gives a good idea what it typically looks like if your duvet and cover has it.
And if they don’t have this. Hand sew a shoelace to the inside of the cover, and just tie it to the corner of the duvet. Shoelace knot about an inch down the corner tight, and it won’t go anywhere.
Both my duvet and cover have little loops. But one has loops that are just long enough to pull them through the other and tie a knot. Works well enough. I feel like some country that uses a lot of duvets should set a standard requirement for all duvets to have loops and all covers to have ties.