Topic: Driver cooling
August will be HOT. That in mind, we're going down the coolshirt system / DIY route. This may be a dumb question, but... I have a SFI 3.1 suit so I need 3.3 underwear. If I buy the $140 coolshirt shirt can I wear it with my setup? If not, I know there's a 3.3 shirt out there for about $260. Thanks.