What is the gift like when you go to the Sanctuary Spa in London?

We are going to the spa next week and I want to know if it is worth upgrading to the evening package which includes a treatment, supper and a gift. I want to know if the gift is worth it so if anyone knows what sort of gift you get that would be great

Thanks
It is the Sactuary Spa in London, near covent garden

not sure which specific one you’re referring to