FAQs Q: Do you have difficulty putting on t-shirts? A: Then you should buy the AVA cooling vest.      The AVA is both an active and a passive cooling garment. The  vest can be soaked in water and used as an evaporative vest, and/or you can connect the vest to a Cool      Shirt®cooler. Q: Do you only need the cooling system for a recovery break? A: Then you should try a cooling vest.      The AVA cooling vest is easy to put on and take off when your cooling recover periods are mixed in with your activity. Q: Do you want to wear the cooling garment under other clothing?     A: You should pick a cooling shirt and maybe 2Cool Pants.      The shirt is more comfortable against the skin because it is 100% cotton and the tubes are on the outside of the shirt. Q: Can I try both of them? A: Many of our customers order both a shirt and a vest and return the one that doesn't work for them.