Mens Thermal Microfleece Top: Heat Holders Microfleece thermal construction holds more warm air close to your body, keeping you warmer for longer. Great for wearing under anything as a soft thermal base layer. To be the warmest you can be, in the coldest of times, you need a high-performance layer next to your skin to start you off. Heat Holders Thermal Microfleece Base Layer is the answer to this!. Made of a light-weight microfleece, it has an excellent weight to warmth ratio which in turn means a highly versatile layer. It also has flat comfort seams which minimise bulk to help in creating a durable and non-chaffing fit - making it perfect for layering! . The Top of the Base Layer has a 1/4 Zip Collar, along with a protective chin guard enables practical venting, ensuring you can obtain a suitable temperature and comfort around the neck. It comes in a range of sizes from Small to XX-Large (34-52 Chest), to help you with the best fitting thermal base layer. All items from the Microfleece Base Layer have a great 0.61 TOG Rating. This base layer comes in both men's and ladies sizes, and both tops and bottoms are available!. Extra Product Details: - Microfleece Top - 5 Sizes - 1/4 Zip Collar - 0.61 TOG - Lightweight microfleece - Comfort seams - Breathable construction - Multi-directional stretch - Bottoms also available - Ladies also available