how do I reply on tumblr,I’m obviously being thick but its driving me nuts

I need mens wetsuits for a shoot,anyone have old ones that they no longer use/want?

I need some old wetsuits for a upcoming photo story to be re worked, if you have any mens ones that you could donate to me it would be greatly appreciated, I guess size medium or large

I cant work out how to reply on tumblr???

I think both a modern 2 piece long sleeves and legs would be good as well as a pair of trousers, faded colours/cracked logos etc would be a bonus, must all be ok to be cut up