Other base-layers have antibacterial properties that will wash out, often becoming far less potent over time while also polluting the water supply, however, this Trojan base-layer vest features a special Odegon Deo Tag which provides odour-free properties that won't wash out and will last for the life of the garment. The patch is small and discreet but can neutralise odour over fabric the size of a tennis court. That's how powerful this technology is. This base-layer vest is also made with Hydrobase fabric which fits close to the skin for a fantastic Comfortable fit, and wicks away moisture to keep you feeling fresh and Comfortable when you're working hard.