Mens Microfleece top by Heat Holders - Warm 1/4 Zip Thermal Base Layer Long Sleeve 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! To help with a slim fit and overall comfort while wearing the microfleece base layer is made with a highly breathable construction allowing moisture to escape - keeping you dry and warm. Along with the innovative multi-directional stretch and expert brushing technique of Heat Holders helps make for high freedom of movement while worn and keeps warm air held close to your body. 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!\"