I ordered this jacket after wearing my fiancé's medium sized one while camping. I'm a size small but after wearing his on many chilly days and nights, I couldn't wait to purchase one for myself. Jack Wolfskin has always created great quality gear and clothing so I'm just happy to know that they hit the mark yet again with this jacket. I wear the jacket while running and working out outdoors, and I love how the arm pocket comes in handy for holding my iPhone, ID card, and keys. I think that the jacket is very weather resistant and durable. The jacket is also true to size. Overall, I'm very pleased with this item.