Cooling mats for Goldies?

Summer heat is here and my girl is already struggling.

I've been thinking of getting her a cooling mat and was wondering if there's something that has worked for your Goldens?

My girl loves to steal blankets and towels off the floor so a regular blanket- like one won't work and I'm trying to avoid gels because there are so many random Temu- like items out there that claim to be non- toxic....

I'm willing to spend on a more expensive one if it works and will last.