Your body is your engine. Riding a bicycle puts major demands on your torso. Your vital organs are working overtime to deliver the performance you ask of them. Heart, lungs, stomach and a significant amount of skin are all effected. The DeFeet UnD ICE™ base layer was made to this most important core area of the body. In suffocating heat, the last thing the body wants is more clothing. Your body will welcome the UnD ICE™ base layer, though. ICE™ technology can help cool the body at a greater rate than wearing just a jersey over bare skin. Crashing is a constant risk in cycling there is no better barrier to cuts and scrapes than the UnD ICE™.
bikerumor.com review of the UnD ICE™.