“Seems to do a great job of keeping the heat in as it purs with sweat when taking it off after a workout. i like the zipped pockets and the constuction overall is great. Id love to see some soft material on the inside of the neck, its quite tight and i feel a softer material would aid comfort for prolonged use. Im 5.6, the measurements suggested i should order a small or even a medium but i founf the small was too big and ended up exchanging for an xs. Overall great product.”