OMM Nitro Women's Running T-Shirt A super lightweight tee for training and race day. Constructed using an incredibly lightweight Nylon fabric, the Nitron T-Shirt from OMM features fast-wicking and quick-drying properties to keep you feeling cool, dry and comfortable at all times during training and racing. The T-Shirt features a combination of near-zero insulating value and great air permeability that work together to allow rapid heat shedding even during the hardest efforts or on the hottest days. Closely woven fabric and 4-way stretch make for an incredibly soft feeling against the skin. This also allows for easy layering beneath a mid on those cooler days. Flatlock seams feature away from the shoulders for further enhanced comfort. This helps to reduce the risk of irritation on the skin from rubbing and chafing as you move and keeps you feeling comfortable.