Features: Durable Material: Made of polyester material these thermal base layers are light for layering under other clothes. Non abrasion spandex fabric with excellent elasticity and durability for maximum mobility. Special Design: It can quickly absorb sweat when sweating and keep the body dry.Great Performance in warm or cool weather. Sweat and Moisture can be pulled away from skin very quickly; Enable sweat easy for air-dry to prevent clothes sticking to the body. Useful Function: The boy\\'s thermal underwear set are supple material inside which can ensure warmth comfort lightness so that your kids will not feel restrained during activities. Fine Workmanship: The long johns is designed with elastic waistband which is not easy to fall off and is easy to wear. Meaningful Tool: Boys\\' thermal underwear set are made with supple polyester fabric to give the warmth during the cold weather seasons. Specification: Color: Gray/Green/Pink/Blue. Material: Polyester. Size Table: Size Shirt Length(cm) Chest(cm) Sleeve(cm) Waist(cm) Pants Length(cm) 140 52 65 51 50 75 Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. includes: 1*Thermal Underwear 1* Thermal Pants "