Large store: Long, keyword heavy product names?

Hi all,

I am working on a rather large Shopify store in the clothing/textile niche.
In smaller, niche, or one product stores, I usually go for suitable short and catchy names.

For a larger store with many clothing products, what has more impact? SEO impact?

e.g.:
"Summer pajama cloudy day"
or
"Long sleeve pajama thin fabric for summer with shorts"

Let me know what you are thinking.