The armband is the basic model, and the armband-free model is the flagship model.

1, the armband is the basic model: the armband of the basic model is a combination of red, white and blue, and there is a penguin pattern in it, indicating that the product is filled with real goose down, indicating that it has good thermal insulation and high product quality.

2, sleeveless is the flagship model: the flagship model emphasizes simplicity, texture and comfort, and does not use armband design to express a minimalist style.