Ted & Bill’s Excellent Advice…
 

Get the right clothes and the heat is not a factor which should ever override safety.
MX boots are not a problem when you’re on the move. Yes, they are bulky but your ankles are worth protecting. Any boot which does that is better than nothing.

A good full-face MX helmet is much better than an open one.

You should always try to wear protection (gloves, padded knees & shoulders in trousers & jacket). If you don’t, you’re being selfish to your family, people who love you and the people who will have to repair you, take care of you or support you if something bad happens.

Set a responsible example to younger riders.

Party on dudes.
Stephan

answering my own question
 

having bought these boots i can truthfully say they're awesome! 30mph or over and the air starts to get in and cool off your tootsies. next hurdle is working out what to do when it rains (i'm in C america in rainy season... break out the platic bags:biggrin3: )

note- alpinestar shoe sizes are 'roomy' so recommend not buying online without trying on first