Top critical review
Highly dubious as to how this shirt will cool me down- every review is says they use it for warmth
Reviewed in the United Kingdom on 18 June 2019
I am highly dubious as to how this will cool me down in Summer. Almost all reviewers are using it for winter conditions. If I wear it I can't return it so basically I'm stuck with this thing. The sizing is ridiculous even for compression, I literally can't get the medium over my head. Not happy at all. Buyer beware, a total waste of money based on size alone. It appears the whole heatgear compression shirt is purely a marketing ploy. The following backpackinglight review sums this up:
"their marketing spin is making all sorts of psuedo-scientific claims about how wonderful their products are. But once again, 95% of all that is nothing more than pure spin. Nothing has really changed, except that they have now learnt some science words.
Shade works wonderfully: it blocks incoming radiation.
Air circulation gets rid of trapped hot air.
Wicking may help slightly by spreading the sweat out to enhance evaporation, but it is not a panacea.
Not walking in the middle of the day is probably 10x more effective than any of the latest fabrics – or even more."
Now here is the science study to back up the fact that this material does not keep you cool:
Lower-leg compression, running mechanics, and economy in trained distance runners.
Stickford AS1, Chapman RF, Johnston JD, Stager JM.
The efficacy of and mechanisms behind the widespread use of lower-leg compression as an ergogenic aid to improve running performance are unknown. The purpose of this study was to examine whether wearing graduated lower-leg compression sleeves during exercise evokes changes in running economy (RE), perhaps due to altered gait mechanics. Sixteen highly trained male distance runners completed 2 separate RE tests during a single laboratory session, including a randomized-treatment trial of graduated calf-compression sleeves (CS; 15-20 mm Hg) and a control trial (CON) without compression sleeves. RE was determined by measuring oxygen consumption at 3 constant submaximal speeds of 233, 268, and 300 m/min on a treadmill. Running mechanics were measured during the last 30 s of each 4-min stage of the RE test via wireless triaxial 10-g accelerometer devices attached to the top of each shoe. Ground-contact time, swing time, step frequency, and step length were determined from accelerometric output corresponding to foot-strike and toe-off events. Gait variability was calculated as the standard deviation of a given gait variable for an individual during the last 30 s of each stage. There were no differences in VO2 or kinematic variables between CON and CS trials at any of the speeds. Wearing lower-leg compression does not alter the energetics of running at submaximal speeds through changes in running mechanics or other means. However, it appears that the individual response to wearing lower-leg compression varies greatly and warrants further examination. The same applies to shirts.