Change Sold Out Text on Specific Products

Site URL: https://caper-harpsichord-tasl.squarespace.com/

Is there a bit if code that would change my Sold Out flags to Closed on specific products? I'd like a way to specify an item is no longer available. Thanks!

https://caper-harpsichord-tasl.squarespace.com/all

pw: art

Add to Design > Custom CSS

/* Sold out to CLosed */
.summary-thumbnail-container[href*="drawing-painting-animals-camp-y9klw"] .product-mark.sold-out {
    font-size: 0 !important;
}
.summary-thumbnail-container[href*="drawing-painting-animals-camp-y9klw"] .product-mark.sold-out:before {
    content: "Closed";
    font-size: 18px !important;
}