I never noticed a difference between tan and green bags when I was doing the seasonal change. Then again, it was 70 and sunny/partly cloudy 350 days out of the year there Seriously though, wasn't much different on those rare hot days then green bags in Merids or oceana on a hot day. That and I only have one pair of tan since I lent my other to a rag buddy and never got it back. Will probably be getting better use with him over afghan than me on the beach back in VA so whatever