• Super warm: the lambswool insole is very warm and comfortable to wear, it will keep your feet warm all day long, ideal for winter boots and other shoes. • Arch support: the lambswool insole has the function of arch support while keeping you warm and comfortable, which can make walking and standing more comfortable, making it very suitable for people who need to stand for work. • Super breathable: lambswool is a high-quality natural breathable material, and the insole made from it is also breathable, keeping your feet dry all day. • Scope of application: suitable for people with shoe sizes in the range of US 5 to US 13, and also suitable for various types of shoes. Especially in the cold winter, lambswool insoles are a great choice for you.