HEAT ON Quilted Pajamas, Size L, 100% Cotton on Skin Side, Apita Piago Uny This is a HEAT ON product from Uny. These are quilted pajamas with 100% cotton on the skin side. The material is soft and feels good against the skin. Purchased in-store in October 2025. Only tried on, tags still attached. Size L 3289 yen (tax included) HEAT ON was launched in September 2009 as a high-performance material innerwear that excels in moisture absorption, heat generation, and heat retention, with moisture control and stretch functions, making it warm and easy to move in.