using coolers and blankets ???

I've never used them but i'm horse to my school and I think it would help out but I don't know what to get also wheres a good place to get polo wraps???

Hey, its great that you want to help out! I'm sure they will appreciate the effort!
Polo wraps can be bought from any saddlery, so just have a look around and find ones that suit your budget. Coolers are generally used after a horse has been worked and had a hose. Just like wrapping a towel around yourself to help dry and keep you warm! Coolers wick the moisture away so the horse dries quickly and you can put their day rugs back on again. I hope this helps!
Cheers