Something simple

[pliant tide]

Straw hat as an accessory that blocks the Sun for demons so they can walk in it.

For demon slayers it'll just be a cool accessory

Wait nvm because they have to cover their entire body to be 200% safe and a hat is literally covering their head...

They'd have to be decked out in clothes and a hat

Scratch the idea

[late knot]

Higoshi already said demons wont have a restriction in the sun

[pliant tide]

Thanks for the information