They have vest and many items, also polarbreezebandanas dot com has various neck, wrist and body cooler wraps.
Edited to add, consider getting a baseball cap cooler or if they have a different style. I think keeping the head cool is a huge help, well for me it has been. Also a neck wrap, because they are easier to grab and recharge with a squeeze of fresh cold water and snap.
Check out web sites that are for construction workers they have the best selection and many have selections for all sizes. As an electrician that works in very hot spots I know these are the best.
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