RONSOU Steampunk Style Round Vintage Polarized Sunglasses Retro Eyewear UV400 Protection Matel Frame

Do you know if this would fit my 12 year old son?

is it possible to put prescription Len on them?

I'm thinking my hair will get stung in the spring things on the side. Has anyone else experienced this or commented about it?

Are these glasses good for someone with a big rounded head?