Hello, First of all, thank you for your interest in our product and brand. For our **Navy Blue Hooded Men's Tracksuit Set (E7324)** model, in line with the measurements of 1.70 height and 83 kg you have given, we recommend that you choose **size XL** to provide ease of movement and comfortable use in tracksuit sets. If you prefer a more fitted style, you can also consider size L; however, for a more flowy and comfortable fit, we recommend size XL. We wish you pleasant shopping and healthy days. Madmext Team