RP Collections Mens Thermal Underwear V-Neck Long Sleeve T-Shirt British designed thermal underwear V-Neck long sleeve t-shirt. Made from soft fully brushed thermal fabric for extra warmth. Official R.P. COLLECTIONS product, Est. 1982. 50% cotton & 50% polyester. Easy to care: home machine washable. Can be worn under everyday clothes. Suitable for use as sleepwear, lounging & for outdoor sports - skiing, hiking, biking, etc. Ideal for outdoor workers: warehouse staff, drivers, builders or anyone working in the cold.