2 PACK REPLACEMENTS: You will receive 2 men's long underwear bottoms for cold weather, and multiple color combinations are optional; machine washable thermal underwear for men is easy to clean, and it will meet your needs to spend a warm autumn and winter season. EASY MATCHING AND VERSATILE: Classic thermal bottoms can be worn as thermal base layer pants for men under trousers when you are outdoors, it's suitable for yoga, pilates, exercise, jogging, running, walking, indoor activities, gym, home, leisure time and daily life. FRIENDLY AND CONVENIENT: Pull on closure thermal pants are easy to put on and take off with its elastic waistband, and the opening design of special parts conforms to men's usage habits, stretch fabric can be stretched to fit all body shapes and keep warm all the time. WARM AND COMFORTABLE: Men's thermal underwear bottoms with fleece lined can warm you up faster and reduce heat loss, and lightweight thermal base layer pants refuse to be bloated and heavy, allowing you to stay warm while still being able to stretch and move freely. PREMIUM MATERIAL: Made of 92% polyester and 8% spandex, men's thermal underwear is soft and lightweight, which combines warmth and breathability; fitted thermal long johns will effectively lock in heat and prevent cold air from entering, that’s an ideal choice for cold winter. Machine Wash. Elastic closure. Imported. 90% Polyester, 10% Spandex.