For a unisex, oversized, wide-cut, soft-textured cotton basic white hooded sweatshirt with a fleece interior, I would recommend a size M if you are 175 cm tall and weigh 80 kg. However, since you stated that you like to wear loose clothing, you can choose size L. Since the product is already oversized - wide cut, it will not look like a size L sack, it will just provide a slightly more comfortable and loose look. If you like loose clothing style, size L will be suitable for you. We wish you pleasant shopping.