Heavyweight thermal base layer ideal for very extreme cold DUAL BRUSHING Supersoft HeatWeaver yarn brushed both inside and out for maximum warmth and softness PERFECT STRETCH knitting technology produces the perfect stretch for freedom of movement and fit FLAT COMFORT SEAMS minimise bulk and create a comfortable non-chafe fit, perfect for layering MOISTURE & ODOUR MANAGEMENT technology helps keep you drier, fresher, and more comfortable Made with 100% Polyester for long-lasting warmth and durability Matching tops also available for a complete set Stay warm and comfortable in the coldest temperatures with Heat Holders Men's Original Base Layer Bottoms. Stay warm in even the coldest of temperatures with Heat Holders Men's Original Base Layer Bottoms. These heavyweight thermal underwear bottoms are ideal for extreme cold weather, and are perfect for layering with other clothing items. The Dual Brushing Supersoft HeatWeaver yarn is carefully brushed both inside and out to maximise warmth and softness, so you can stay comfortable all day long. Our knitting technology and attention to detail produce the perfect stretch for freedom of movement and fit, allowing you to move around with ease. Our carefully finished flat seams minimise bulk to create a comfortable non-chafe fit, perfect for layering. You won't have to worry about excess bulkiness or discomfort when you wear these bottoms. Moisture and odour management technology helps keep you drier, fresher and more comfortable. The 100% polyester material wicks away moisture, while also managing any odours that may develop throughout the day. Matching tops are also available, so you can create a complete base layer outfit. Don't let the cold weather get in the way of your outdoor activities - choose Heat Holders Men's Original Base Layer Bottoms for the ultimate in warmth and comfort.